Build geoserver package

.github/workflows/build-demo-app.yml

@@ -0,0 +1,62 @@
+name: Build demo app
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+  BRANCH: ${{ github.head_ref || github.ref_name }}
+
+jobs:
+  build-geoblacklight-docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Get geoserver version from dockerfile
+        id: package_version
+        run: echo "version=$(grep -Pio '(?<=ARG VERSION=).*' Dockerfile)" >> $GITHUB_OUTPUT
+
+        # On pull request
+      - name: Build and push geobalcklight Docker image
+        uses: docker/build-push-action@v6
+        if: github.event_name == 'pull_request'
+        with:
+          context: "${{ github.workspace }}/geoserver/"
+          file: "${{ github.workspace }}/geoserver/Dockerfile"
+          push: true
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: ghcr.io/geoblacklight/geoserver:${{ steps.package_version.outputs.version }}
+
+        # On push to main
+      - name: Build and push branch Docker image
+        uses: docker/build-push-action@v6
+        if: github.event_name == 'workflow_dispatch' || github.event_name == 'push'
+        with:
+          context: "${{ github.workspace }}/geoserver/"
+          file: "${{ github.workspace }}/geoserver/Dockerfile"
+          push: true
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: |
+            ghcr.io/geoblacklight/geoserver:${{ steps.package_version.outputs.version }}
+            ghcr.io/geoblacklight/geoserver:latest

geoserver/Dockerfile

@@ -1,3 +1,4 @@
-FROM docker.osgeo.org/geoserver:2.25.3
+ARG VERSION=2.25.3
+FROM docker.osgeo.org/geoserver:$VERSION
 RUN rm -rf $GEOSERVER_DATA_DIR
 ADD geoserver_data/ /opt/geoserver_data/