First attempt at a build workflow

.github/workflows/docker.yml

@@ -0,0 +1,87 @@
+name: Build and Push Docker Images
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  release:
+    types: [released]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  packages: write
+
+jobs:
+  build_and_push:
+    runs-on: ubuntu-latest
+    strategy:
+      # Prevent a failure in one image from stopping the other builds
+      fail-fast: false
+      matrix:
+        # TODO: Get Renovate to update these
+        cnpgTag:
+          - 14.10
+          - 15.5
+          - 16.1
+        pgvectorsVersion:
+          - v0.1.10
+
+    steps:
+      # Setup
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3.0.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3.0.0
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3.0.0
+        if: ${{ !github.event.pull_request.head.repo.fork }}
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set major postgres version
+        id: version
+        run: |
+          pg_major=$(echo ${{ matrix.cnpgTag }} | cut -d'.' -f1)
+          echo "pg_major=$pg_major" >> "$GITHUB_OUTPUT"
+
+      - name: Generate docker image tags
+        id: metadata
+        uses: docker/metadata-action@v5
+        with:
+          flavor: |
+            # Disable latest tag
+            latest=false
+          images: |
+            name=ghcr.io/${{ github.repository_owner }}/cnpgvecto.rs
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            # TODO: When exactly to push these tags?
+            type=raw,value=${{ matrix.cnpgTag }}-${{ matrix.pgvectorsVersion }}
+            type=raw,value=${{ steps.version.outputs.pg_major }}-${{ matrix.pgvectorsVersion }}
+
+      - name: Build and push image
+        uses: docker/build-push-action@v4.1.1
+        with:
+          context: .
+          # TODO: Enable multiarch build
+          platforms: linux/amd64
+          push: ${{ !github.event.pull_request }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: ${{ steps.metadata.outputs.tags }}
+          labels: ${{ steps.metadata.outputs.labels }}
+          build-args: PG_MAJOR=${{ steps.version.outputs.pg_major }},PGVECTORS_TAG=${{ matrix.pgvectorsVersion }}

Dockerfile

@@ -3,7 +3,7 @@ ARG PG_MAJOR=14
 FROM ghcr.io/cloudnative-pg/postgresql:$PG_MAJOR
 
 ARG PG_MAJOR
-ARG PGVECTORS_TAG=v0.1.10
+ARG PGVECTORS_TAG
 ARG ARCH=x86_64
 
 # drop to root to install packages