feat: Dockerfiles and Gitea Actions workflow for standard and bundled-postgres images

.gitea/workflows/docker.yml

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+name: Docker
+
+on:
+  push:
+    branches: [master, main]
+    tags: ["v*"]
+  pull_request:
+    branches: [master, main]
+
+env:
+  REGISTRY: git.govekar.net
+  IMAGE: lovrog05/localmodelroutex
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Docker meta (standard)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=sha-,format=short
+
+      - name: Docker meta (bundled)
+        id: meta-bundled
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE }}
+          tags: |
+            type=ref,event=branch,suffix=-bundled
+            type=semver,pattern={{version}},suffix=-bundled
+            type=semver,pattern={{major}}.{{minor}},suffix=-bundled
+            type=sha,prefix=sha-,format=short,suffix=-bundled
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+
+      - name: Build and push — standard
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha,scope=standard
+          cache-to: type=gha,mode=max,scope=standard
+          platforms: linux/amd64,linux/arm64
+
+      - name: Build and push — bundled (postgres included)
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile.bundled
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta-bundled.outputs.tags }}
+          labels: ${{ steps.meta-bundled.outputs.labels }}
+          cache-from: type=gha,scope=bundled
+          cache-to: type=gha,mode=max,scope=bundled
+          platforms: linux/amd64,linux/arm64

Dockerfile

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+# ── Build stage ──────────────────────────────────────────────────────────────
+FROM node:22-alpine AS ui
+WORKDIR /src/dashboard
+COPY backend/dashboard/package*.json ./
+RUN npm ci
+COPY backend/dashboard/ ./
+RUN npm run build
+
+FROM golang:1.24-alpine AS go-build
+WORKDIR /src
+COPY backend/go.mod backend/go.sum ./
+RUN go mod download
+COPY backend/ .
+COPY --from=ui /src/dashboard/../internal/web/dist ./internal/web/dist
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /lmr ./cmd/server
+
+# ── Runtime stage ─────────────────────────────────────────────────────────────
+FROM gcr.io/distroless/static-debian12:nonroot
+COPY --from=go-build /lmr /lmr
+EXPOSE 8080
+ENTRYPOINT ["/lmr"]

Dockerfile.bundled

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+# ── Build stage ──────────────────────────────────────────────────────────────
+FROM node:22-alpine AS ui
+WORKDIR /src/dashboard
+COPY backend/dashboard/package*.json ./
+RUN npm ci
+COPY backend/dashboard/ ./
+RUN npm run build
+
+FROM golang:1.24-alpine AS go-build
+WORKDIR /src
+COPY backend/go.mod backend/go.sum ./
+RUN go mod download
+COPY backend/ .
+COPY --from=ui /src/dashboard/../internal/web/dist ./internal/web/dist
+RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /lmr ./cmd/server
+
+# ── Runtime stage (Postgres bundled) ─────────────────────────────────────────
+FROM alpine:3.21
+
+RUN apk add --no-cache postgresql16 postgresql16-client su-exec bash
+
+COPY --from=go-build /lmr /usr/local/bin/lmr
+COPY deploy/entrypoint-bundled.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENV PGDATA=/var/lib/postgresql/data
+ENV PGUSER=lmr
+ENV PGPASSWORD=lmr
+ENV PGDATABASE=lmr
+# The gateway reads GATEWAY_DB_URL; set a default that points to the local PG.
+ENV GATEWAY_DB_URL="postgres://lmr:lmr@localhost:5432/lmr?sslmode=disable"
+
+VOLUME ["/var/lib/postgresql/data"]
+EXPOSE 8080
+
+ENTRYPOINT ["/entrypoint.sh"]

deploy/entrypoint-bundled.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+PGDATA="${PGDATA:-/var/lib/postgresql/data}"
+PGUSER="${PGUSER:-lmr}"
+PGPASSWORD="${PGPASSWORD:-lmr}"
+PGDATABASE="${PGDATABASE:-lmr}"
+
+# ── Initialise cluster if needed ─────────────────────────────────────────────
+if [ ! -f "$PGDATA/PG_VERSION" ]; then
+  echo "→ initialising postgres cluster"
+  install -d -m 0700 -o postgres "$PGDATA"
+  su-exec postgres initdb \
+    --username="$PGUSER" \
+    --pwfile=<(echo "$PGPASSWORD") \
+    --auth=md5 \
+    -D "$PGDATA" \
+    --no-instructions
+fi
+
+# ── Start postgres in the background ─────────────────────────────────────────
+echo "→ starting postgres"
+su-exec postgres postgres -D "$PGDATA" \
+  -c listen_addresses=localhost \
+  -c log_min_messages=WARNING &
+PG_PID=$!
+
+# ── Wait for postgres to accept connections ───────────────────────────────────
+echo "→ waiting for postgres"
+until su-exec postgres pg_isready -U "$PGUSER" -d "$PGDATABASE" -q 2>/dev/null; do
+  sleep 0.5
+done
+
+# ── Ensure the application database exists ───────────────────────────────────
+su-exec postgres psql -U "$PGUSER" -tc \
+  "SELECT 1 FROM pg_database WHERE datname = '$PGDATABASE'" \
+  | grep -q 1 || su-exec postgres createdb -U "$PGUSER" "$PGDATABASE"
+
+# ── Start the gateway (foreground, takes over the process) ───────────────────
+echo "→ starting lmr"
+# Forward signals to both processes on exit.
+trap 'kill $PG_PID 2>/dev/null; wait $PG_PID' TERM INT
+
+exec /usr/local/bin/lmr