Add a container image for the server

Why: the server is a single static binary with no dependencies, so its
container should be nothing but that binary. Shipping one also makes the
master key easy to lose, which needed handling rather than documenting.

What:
- Dockerfile: two stages, runtime is scratch plus the binary and a CA bundle
  for reaching an OIDC provider, running as uid 65532. About 9 MB. The build
  stage copies only go.mod, cmd/keeporgd and internal, so client or docs
  changes do not invalidate it.
- The image has no shell, so HEALTHCHECK runs `keeporgd -healthcheck`, a new
  flag that probes /healthz on the configured address and exits non-zero
  with a reason. podman needs --format docker to keep the healthcheck at
  all, which the Makefile passes when it picks podman.
- New -master-key-file flag, so a mounted secret works without a config file.
- The server now checks at startup whether the master key still opens the
  stored vault keys, and says so. Without it, a container restarted without
  its key discovers the problem one failed merge at a time.
- make docker, docker-run and docker-save; a compose example with read_only,
  cap_drop ALL and no-new-privileges.
- The client and the server now version independently, so their Debian
  changelogs are split per package and `make changelog` takes PKG=.
  Server 0.3.0; the clients stay at 0.2.0.

Proved: built with podman and run. The container serves /healthz and /web,
its own healthcheck reports healthy, and a vault created through it was
edited from the same base by keepassxc-cli twice, merged by the server into
version 3, and read back with both entries intact. Restarted without the
master key it warns "1 of 1 stored vault keys do not open with this master
key" and answers a merging push with 409 merge_failed, leaving the vault
untouched; restored, it logs "1 vault keys available for merging" and merges
again. The same key supplied through -master-key-file from a mounted file
works identically. Both .deb packages build with their own changelog, and
make check is clean.

.dockerignore

@@ -0,0 +1,6 @@
+# The image is built from go.mod, cmd/keeporgd and internal only. Everything
+# else just makes the build context bigger.
+*
+!go.mod
+!cmd/keeporgd/
+!internal/

Dockerfile

@@ -0,0 +1,81 @@
+# syntax=docker/dockerfile:1
+
+# KeepOrg synchronization server.
+#
+# The server is a static binary with no third-party dependencies and no cgo,
+# so the runtime image carries the binary, a certificate bundle for talking
+# to an OIDC provider, and nothing else. There is no shell in it: the binary
+# probes its own health.
+#
+#   podman build --format docker -t keeporgd:0.3.0 --build-arg VERSION=0.3.0 .
+#   docker build -t keeporgd:0.3.0 --build-arg VERSION=0.3.0 .
+#
+# podman needs --format docker, because the OCI image format has no
+# HEALTHCHECK field and drops it silently.
+#
+# or `make docker`, which takes the version from versions.mk.
+
+FROM golang:1.24-alpine AS build
+
+ARG VERSION=dev
+WORKDIR /src
+
+# Only what the server is built from, so a change to the clients, the
+# Android app or the docs does not invalidate this layer.
+COPY go.mod ./
+COPY cmd/keeporgd ./cmd/keeporgd
+COPY internal ./internal
+
+RUN CGO_ENABLED=0 GOOS=linux go build \
+        -trimpath \
+        -ldflags "-s -w -X main.Version=${VERSION}" \
+        -o /out/keeporgd ./cmd/keeporgd
+
+# Empty directories to copy into the scratch image with the right owner.
+# There is no shell there to create them later.
+RUN mkdir -p /out/var/lib/keeporg /out/etc/keeporg
+
+
+FROM scratch
+
+ARG VERSION=dev
+LABEL org.opencontainers.image.title="KeepOrg server" \
+      org.opencontainers.image.description="Synchronization server for collaborative KeePass databases" \
+      org.opencontainers.image.version="${VERSION}" \
+      org.opencontainers.image.source="https://garage.rcmd.space/keeporg" \
+      org.opencontainers.image.licenses="AGPL-3.0-or-later" \
+      cc.tiredsysadmin.application="cc.tiredsysadmin.linux.keeporgd"
+
+# Needed to reach an OIDC provider over TLS. Nothing else from the builder
+# comes along.
+COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+
+# The data directory holds state.json and the KDBX blobs. The configuration
+# directory holds server.json and, unless the key is supplied through
+# KEEPORG_MASTER_KEY, the master key that unwraps the vault keys. They are
+# separate on purpose: whoever holds both can read every merge vault.
+#
+# Give the master key somewhere durable, one of these two ways:
+#
+#   -e KEEPORG_MASTER_KEY="$(head -c 32 /dev/urandom | base64)"   (preferred)
+#   -v keeporg-config:/etc/keeporg
+#
+# With neither, the server mints a key into the container's own layer on
+# first start and loses it on the next `run`. It says so loudly at startup,
+# and merging is all that stops working: clients still open their vaults.
+COPY --from=build --chown=65532:65532 /out/var/lib/keeporg /var/lib/keeporg
+COPY --from=build --chown=65532:65532 /out/etc/keeporg /etc/keeporg
+VOLUME ["/var/lib/keeporg", "/etc/keeporg"]
+
+COPY --from=build /out/keeporgd /keeporgd
+
+# A fixed unprivileged id, matching the convention used by distroless.
+USER 65532:65532
+EXPOSE 8765
+
+# The image has no shell, so the binary checks itself.
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+    CMD ["/keeporgd", "-healthcheck", "-addr", ":8765"]
+
+ENTRYPOINT ["/keeporgd"]
+CMD ["-addr", ":8765", "-data", "/var/lib/keeporg"]

Makefile

@@ -102,11 +102,11 @@ deb-client: $(DEB_CLIENT) ## build the client .deb
 deb-server: $(DEB_SERVER) ## build the server .deb
 
 $(DEB_CLIENT): $(BUILD)/linux-$(DEB_ARCH)/keeporg packaging/deb/client/control.in \
-               packaging/deb/changelog packaging/systemd/keeporg.service
+               packaging/deb/client/changelog packaging/systemd/keeporg.service
 	scripts/build-deb.sh client $(VERSION_LINUX) $(DEB_ARCH) $@
 
 $(DEB_SERVER): $(BUILD)/linux-$(DEB_ARCH)/keeporgd packaging/deb/server/control.in \
-               packaging/deb/changelog packaging/systemd/keeporgd.service
+               packaging/deb/server/changelog packaging/systemd/keeporgd.service
 	scripts/build-deb.sh server $(VERSION_SERVER) $(DEB_ARCH) $@
 
 DMG_ARCH ?= $(HOSTARCH)
@@ -158,6 +158,39 @@ $(APK): $(shell find android/app/src -type f 2>/dev/null) android/app/build.grad
 	cp $(APK_BUILT) $@
 	@printf 'built %s\n' "$@"
 
+# ------------------------------------------------------------------- container
+
+# Either engine will do; podman needs no daemon and no root.
+CONTAINER ?= $(shell command -v podman 2>/dev/null || command -v docker 2>/dev/null || echo docker)
+IMAGE     ?= keeporgd
+IMAGE_TAG ?= $(VERSION_SERVER)
+# podman defaults to the OCI image format, which has no HEALTHCHECK field.
+IMAGE_FORMAT := $(if $(findstring podman,$(CONTAINER)),--format docker,)
+IMAGE_TAR := $(DIST)/keeporgd-$(VERSION_SERVER)-oci.tar
+
+.PHONY: docker
+docker: ## build the server container image
+	$(CONTAINER) build $(IMAGE_FORMAT) --build-arg VERSION=$(VERSION_SERVER) \
+	  -t $(IMAGE):$(IMAGE_TAG) -t $(IMAGE):latest .
+	@printf 'built %s:%s\n' "$(IMAGE)" "$(IMAGE_TAG)"
+
+.PHONY: docker-run
+docker-run: docker ## run the image on 127.0.0.1:8765 with throwaway state
+	$(CONTAINER) run --rm -it \
+	  -p 127.0.0.1:8765:8765 \
+	  -e KEEPORG_MASTER_KEY="$$(head -c 32 /dev/urandom | base64)" \
+	  -e KEEPORG_ADMIN_PASSWORD="$${KEEPORG_ADMIN_PASSWORD:-dev-password-1}" \
+	  $(IMAGE):$(IMAGE_TAG) -addr :8765 -data /var/lib/keeporg -url http://127.0.0.1:8765
+
+.PHONY: docker-save
+docker-save: $(IMAGE_TAR) ## save the image as a tarball under dist/
+
+$(IMAGE_TAR): docker
+	@mkdir -p $(DIST)
+	$(CONTAINER) save --format oci-archive -o $@ $(IMAGE):$(IMAGE_TAG) 2>/dev/null || \
+	  $(CONTAINER) save -o $@ $(IMAGE):$(IMAGE_TAG)
+	@printf 'saved %s\n' "$@"
+
 # --------------------------------------------------------------------- publish
 
 FDROID_HOST     ?= rcmd@garage.rcmd.space
@@ -183,8 +216,9 @@ bump: ## bump a version: make bump PLATFORM=android PART=minor
 	scripts/bump.sh "$(PLATFORM)" "$(PART)"
 
 .PHONY: changelog
-changelog: ## add a Debian changelog entry: make changelog MSG="what changed"
+changelog: ## add a changelog entry: make changelog PKG=server MSG="what changed"
-	scripts/changelog.sh "$(VERSION_LINUX)" "$(MSG)"
+	scripts/changelog.sh "$(PKG)" \
+	  "$(if $(filter server,$(PKG)),$(VERSION_SERVER),$(VERSION_LINUX))" "$(MSG)"
 
 # ------------------------------------------------------------------ local runs
 

README.md

@@ -54,12 +54,26 @@ Or open `http://127.0.0.1:8765/web` and create the vault from the browser.
 
 ```sh
 make deb        # Debian packages for the client and the server
+make docker     # server container image, scratch-based, about 9 MB
 make dmg        # macOS disk image with an /Applications symlink (on macOS)
 make windows    # Windows zip with a Task Scheduler job
 make android    # unsigned release APK (needs the Android SDK)
 make help       # every target
 ```
 
+Running the server in a container:
+
+```bash
+podman run -d -p 8765:8765 \
+  -e KEEPORG_MASTER_KEY="$(head -c 32 /dev/urandom | base64)" \
+  -e KEEPORG_ADMIN_PASSWORD=change-me \
+  -v keeporg-data:/var/lib/keeporg \
+  keeporgd:latest -addr :8765 -data /var/lib/keeporg -url https://keeporg.example.com
+```
+
+Keep that master key: it unwraps the vault keys, and without it the server
+can no longer merge. See [packaging/docker/compose.yaml](packaging/docker/compose.yaml).
+
 ## Documentation
 
 - [docs/HANDOVER.md](docs/HANDOVER.md) — architecture, the decisions behind

cmd/keeporgd/main.go

@@ -6,11 +6,13 @@ package main
 
 import (
 	"context"
+	"crypto/tls"
 	"encoding/json"
 	"errors"
 	"flag"
 	"fmt"
 	"log"
+	"net"
 	"net/http"
 	"os"
 	"os/signal"
@@ -81,7 +83,12 @@ func main() {
 		addr       = flag.String("addr", "", "listen address (overrides the config file)")
 		dataDir    = flag.String("data", "", "data directory (overrides the config file)")
 		extURL     = flag.String("url", "", "externally reachable base URL (overrides the config file)")
+		masterKey  = flag.String("master-key-file", "",
+			"file holding the base64 master key that wraps the vault keys; "+
+				"$"+secret.MasterKeyEnv+" takes precedence over it")
 		showVer    = flag.Bool("version", false, "print the version and exit")
+		healthOnly = flag.Bool("healthcheck", false,
+			"probe a running server on this address and exit 0 if it is healthy")
 		writeCfg = flag.String("write-config", "", "write a commented example config to this path and exit")
 	)
 	flag.Parse()
@@ -118,6 +125,18 @@ func main() {
 	if *extURL != "" {
 		cfg.ExternalURL = *extURL
 	}
+	if *masterKey != "" {
+		cfg.MasterKeyFile = *masterKey
+	}
+
+	if *healthOnly {
+		// The container image has no shell, so the binary probes itself.
+		if err := healthcheck(cfg); err != nil {
+			fmt.Fprintln(os.Stderr, "unhealthy:", err)
+			os.Exit(1)
+		}
+		return
+	}
 
 	srv, err := server.New(cfg, lg)
 	if err != nil {
@@ -205,6 +224,38 @@ func bootstrap(srv *server.Server, lg *log.Logger) error {
 	return nil
 }
 
+// healthcheck asks a server listening on this configuration whether it is
+// serving, and says why not when it is not.
+func healthcheck(cfg server.Config) error {
+	cfg.Defaults()
+	host, port, err := net.SplitHostPort(cfg.Addr)
+	if err != nil {
+		return fmt.Errorf("address %q: %w", cfg.Addr, err)
+	}
+	if host == "" || host == "0.0.0.0" || host == "::" {
+		host = "127.0.0.1"
+	}
+	scheme := "http"
+	client := &http.Client{Timeout: 5 * time.Second}
+	if cfg.TLSCert != "" && cfg.TLSKey != "" {
+		scheme = "https"
+		// A loopback probe of our own listener: the certificate's name is
+		// the public one, which this connection is not using.
+		client.Transport = &http.Transport{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: true}, //nolint:gosec
+		}
+	}
+	resp, err := client.Get(scheme + "://" + net.JoinHostPort(host, port) + "/healthz")
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("/healthz returned %s", resp.Status)
+	}
+	return nil
+}
+
 func writeExampleConfig(path string) error {
 	ex := fileConfig{
 		Addr:            ":8765",

docs/HANDOVER.md

@@ -34,7 +34,9 @@ internal/client/       shared client engine: API wrapper, merge policy, mirror
 internal/secret/       password verifiers, tokens, identifiers
 internal/totp/         RFC 6238 second factor
 android/               Android client: DocumentsProvider, sync service, UI
-packaging/             deb, macOS bundle and DMG, Windows zip, systemd units
+Dockerfile             the server's container image, built from scratch
+packaging/             deb, macOS bundle and DMG, Windows zip, systemd units,
+                       container compose example
 scripts/               package builders, version bump, changelog
 versions.mk            the one place every platform's version lives
 Makefile               the only entry point for building and publishing
@@ -404,6 +406,43 @@ keeporg db -id <db-id> -strategy merge
 keeporg db -id <db-id> -forget-password    # the server can no longer read it
 ```
 
+### Running it in a container
+
+```sh
+make docker                       # keeporgd:<version>, about 9 MB
+make docker-save                  # dist/keeporgd-<version>-oci.tar
+```
+
+The image is `scratch` plus the static binary and a CA bundle, running as
+uid 65532. There is no shell in it, so `HEALTHCHECK` runs the binary with
+`-healthcheck`, which probes `/healthz` on the configured address.
+`make docker` uses podman when it is installed and docker otherwise; podman
+needs `--format docker` for the image to keep its healthcheck, which the
+Makefile passes.
+
+Two directories matter, and the whole point is that they are separate:
+
+- `/var/lib/keeporg` — state and blobs. Mount a volume.
+- `/etc/keeporg` — `server.json` and, by default, the master key.
+
+**Give the master key somewhere durable**, either `KEEPORG_MASTER_KEY` from
+your secret store, or `-master-key-file` pointing at a mounted secret, or a
+volume on `/etc/keeporg`. A container started with none of those mints a key
+into its own layer and loses it on the next `run`. That is survivable but
+annoying: the vaults still open for their users, and only merging stops. The
+server says so at startup —
+
+```
+WARNING: 1 of 1 stored vault keys do not open with this master key.
+```
+
+— and a merging push then answers `409 merge_failed` rather than corrupting
+anything. Restore the original key and it resumes.
+
+`packaging/docker/compose.yaml` is a worked example with `read_only`,
+`cap_drop: ALL` and `no-new-privileges`; the server writes one directory and
+needs no capabilities.
+
 ## Versioning and publishing
 
 `versions.mk` is the only place a version lives, one per platform plus the

internal/server/server.go

@@ -99,10 +99,45 @@ func New(cfg Config, lg *log.Logger) (*Server, error) {
 	if cfg.OIDC.Enabled() {
 		s.oidc = newOIDCProvider(cfg.OIDC, cfg.ExternalURL+"/oidc/callback")
 	}
+	s.checkVaultKeys()
 	s.routes()
 	return s, nil
 }
 
+// checkVaultKeys reports at startup whether the master key still opens the
+// vault keys in the state document. Getting this wrong is quiet and
+// expensive: a container started without its master key mounted mints a new
+// one, and every merge then fails one push at a time. Saying so once, at
+// startup, is the difference between a puzzle and a fixable mistake.
+func (s *Server) checkVaultKeys() {
+	var total, broken int
+	s.st.Read(func(st *store.State) {
+		for id, d := range st.Databases {
+			if d.WrappedKey == "" {
+				continue
+			}
+			total++
+			if s.keyring == nil {
+				broken++
+				continue
+			}
+			if _, err := s.keyring.Unwrap(id, d.WrappedKey); err != nil {
+				broken++
+			}
+		}
+	})
+	switch {
+	case broken == 0 && total > 0:
+		s.log.Printf("%d vault keys available for merging", total)
+	case broken > 0:
+		s.log.Printf("WARNING: %d of %d stored vault keys do not open with this "+
+			"master key. Those vaults cannot be merged until the original key is "+
+			"restored (%s or %s). Nothing is lost: clients still open the vaults "+
+			"with their own passwords.",
+			broken, total, secret.MasterKeyEnv, s.cfg.MasterKeyFile)
+	}
+}
+
 // Store exposes the metadata store for bootstrap commands.
 func (s *Server) Store() *store.Store { return s.st }
 

packaging/deb/server/changelog

@@ -0,0 +1,40 @@
+keeporgd (0.3.0) unstable; urgency=medium
+
+  * Container image: a scratch-based image of about 9 MB holding the static
+    binary and a CA bundle, running as an unprivileged user. It has no
+    shell, so HEALTHCHECK runs the binary's own -healthcheck probe.
+  * New -master-key-file flag, so a mounted secret can be used without a
+    configuration file.
+  * At startup the server now reports whether the master key still opens the
+    stored vault keys. A container restarted without its key would otherwise
+    discover this one failed merge at a time.
+
+ -- tiredsysadmin <rcmd@garage.rcmd.space>  Fri, 30 Oct 2026 09:15:50 +0100
+
+keeporgd (0.2.0) unstable; urgency=medium
+
+  * Server-side merging. A vault the server can open has its two concurrent
+    saves folded together in memory, by KeePass's own synchronization rules,
+    instead of one being refused. The losing version of an edited entry is
+    kept in that entry's history.
+  * New vault creation: a web interface at /web, and `keeporg vault -create`,
+    both of which build the KDBX file and set its password.
+  * Vault keys are stored encrypted under a master key in
+    /etc/keeporg/master.key, created on first start. Back it up separately
+    from /var/lib/keeporg.
+  * The KDBX 4 codec, its merge engine, and the ChaCha20, BLAKE2b and Argon2
+    it needs are part of the package; they carry no new dependencies.
+
+ -- tiredsysadmin <rcmd@garage.rcmd.space>  Thu, 29 Oct 2026 17:28:45 +0100
+
+keeporgd (0.1.0) unstable; urgency=medium
+
+  * First release.
+  * keeporgd: synchronization server with nested group access control,
+    invite-link and OIDC registration, built-in TOTP second factor,
+    versioned KDBX blobs and server-sent update notifications.
+  * keeporg: desktop client that mirrors assigned databases as ordinary
+    .kdbx files, pushes every save and applies remote changes, with
+    server-wins, client-wins and manual merge strategies.
+
+ -- tiredsysadmin <rcmd@garage.rcmd.space>  Thu, 29 Oct 2026 12:00:00 +0000

packaging/docker/compose.yaml

@@ -0,0 +1,51 @@
+# A deployment of the KeepOrg server, showing the two things that are easy
+# to get wrong: where the master key comes from, and that it does not live
+# in the data volume.
+#
+#   podman-compose up -d      (or docker compose up -d)
+#
+# Generate the master key once, and keep a copy somewhere safe:
+#   head -c 32 /dev/urandom | base64 > master.key
+#
+# Without it the server still runs and still synchronizes; it only refuses
+# to create or merge vaults.
+
+services:
+  keeporgd:
+    # Override with KEEPORG_VERSION; `make docker` tags the version from
+    # versions.mk and :latest.
+    image: keeporgd:${KEEPORG_VERSION:-0.3.0}
+    build:
+      context: ../..
+      args:
+        VERSION: "${KEEPORG_VERSION:-0.3.0}"
+    restart: unless-stopped
+    # Terminate TLS in front of this, and set external_url to the address a
+    # browser sees: invite links, device approval and the OIDC redirect are
+    # built from it.
+    command:
+      - "-addr=:8765"
+      - "-data=/var/lib/keeporg"
+      - "-url=https://keeporg.example.com"
+    ports:
+      - "127.0.0.1:8765:8765"
+    environment:
+      # Preferred: the key never touches a disk the container can write.
+      # Read it from your secret store and pass it in.
+      KEEPORG_MASTER_KEY: "${KEEPORG_MASTER_KEY:?set KEEPORG_MASTER_KEY, see the comment above}"
+      # Only read on the very first start, when no accounts exist yet.
+      KEEPORG_ADMIN_PASSWORD: "${KEEPORG_ADMIN_PASSWORD:-}"
+    volumes:
+      - keeporg-data:/var/lib/keeporg
+      # Only needed instead of KEEPORG_MASTER_KEY above, or to mount a
+      # server.json. Keep it on different storage from keeporg-data.
+      # - keeporg-config:/etc/keeporg
+    # The server writes one directory and needs no privileges at all.
+    read_only: true
+    cap_drop: ["ALL"]
+    security_opt: ["no-new-privileges:true"]
+    user: "65532:65532"
+
+volumes:
+  keeporg-data:
+  # keeporg-config:

scripts/build-deb.sh

@@ -41,7 +41,7 @@ mkdir -p "$stage/DEBIAN" "$stage/usr/share/doc/$pkg"
 sed -e "s/@VERSION@/$version/" -e "s/@ARCH@/$arch/" \
 	"$root/packaging/deb/$kind/control.in" > "$stage/DEBIAN/control"
 install -m 0644 "$root/packaging/deb/copyright" "$stage/usr/share/doc/$pkg/copyright"
-gzip -9nc "$root/packaging/deb/changelog" > "$stage/usr/share/doc/$pkg/changelog.Debian.gz"
+gzip -9nc "$root/packaging/deb/$kind/changelog" > "$stage/usr/share/doc/$pkg/changelog.Debian.gz"
 chmod 0644 "$stage/usr/share/doc/$pkg/changelog.Debian.gz"
 
 if [ "$kind" = server ]; then

scripts/changelog.sh

@@ -1,15 +1,26 @@
 #!/bin/sh
-# Prepend an entry to the Debian changelog.
+# Prepend an entry to one package's Debian changelog. The client and the
-#   changelog.sh <version> "what changed"
+# server version independently, so they keep separate changelogs.
+#   changelog.sh <client|server> <version> "what changed"
 set -eu
 
-version=${1:-}
+package=${1:-}
-message=${2:-}
+version=${2:-}
+message=${3:-}
 root=$(cd "$(dirname "$0")/.." && pwd)
-file=$root/packaging/deb/changelog
+
+case $package in
+client) name=keeporg ;;
+server) name=keeporgd ;;
+*)
+	echo 'usage: make changelog PKG=<client|server> MSG="what changed"' >&2
+	exit 2
+	;;
+esac
+file=$root/packaging/deb/$package/changelog
 
 if [ -z "$version" ] || [ -z "$message" ]; then
-	echo 'usage: make changelog MSG="what changed"' >&2
+	echo 'usage: make changelog PKG=<client|server> MSG="what changed"' >&2
 	exit 2
 fi
 
@@ -17,7 +28,7 @@ author=${DEBFULLNAME:-tiredsysadmin}
 email=${DEBEMAIL:-rcmd@garage.rcmd.space}
 tmp=$(mktemp)
 {
-	printf 'keeporg (%s) unstable; urgency=medium\n\n' "$version"
+	printf '%s (%s) unstable; urgency=medium\n\n' "$name" "$version"
 	printf '%s\n' "$message" | fold -s -w 72 | sed -e '1s/^/  * /' -e '2,$s/^/    /'
 	printf '\n'
 	printf ' -- %s <%s>  %s\n\n' "$author" "$email" "$(date -R)"

versions.mk

@@ -1,6 +1,6 @@
 # Single source of truth for all platform versions (semver).
 # Bump with: make bump PLATFORM=<server|linux|macos|windows|bsd|android> PART=<major|minor|patch>
-VERSION_SERVER   := 0.2.0
+VERSION_SERVER   := 0.3.0
 VERSION_LINUX    := 0.2.0
 VERSION_MACOS    := 0.2.0
 VERSION_WINDOWS  := 0.2.0