ci: add workflow and build 3.1 every week

.github/workflows/push.yml

@@ -0,0 +1,33 @@
+
+name: Push Docker Hub
+
+on:
+  push:
+    branches: [ master, main ]
+  schedule:
+    # Every sunday at 0:00
+    - cron:  '0 0 * * 0'
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+    - name: Login to DockerHub
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKERHUB_USERNAME }}
+        password: ${{ secrets.DOCKERHUB_TOKEN }}
+    - name: Build and push Mainline Debian Version
+      uses: docker/build-push-action@v2
+      with:
+        context: ./v3.1
+        platforms: linux/amd64
+        push: true
+        tags: |
+          jawg/mapnik3:latest
+          jawg/mapnik3:3.1
+          jawg/mapnik3:3.1-bullseye

v3.1/Dockerfile

@@ -12,7 +12,7 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
-FROM debian:buster-slim
+FROM debian:bullseye-slim
 
 ENV MAPNIK_VERSION v3.1.0
 
@@ -39,21 +39,21 @@ ENV BUILD_DEPENDENCIES="build-essential \
     libtiff-dev \
     libwebp-dev"
 
-ENV DEPENDENCIES="libboost-filesystem1.67.0 \
-    libboost-program-options1.67.0 \
-    libboost-regex1.67.0 \
-    libboost-thread1.67.0 \
-    libboost-system1.67.0 \
+ENV DEPENDENCIES="libboost-filesystem1.74.0 \
+    libboost-program-options1.74.0 \
+    libboost-regex1.74.0 \
+    libboost-thread1.74.0 \
+    libboost-system1.74.0 \
     libcairo2 \
     libfreetype6 \
-    libgdal20 \
+    libgdal28 \
     libharfbuzz-gobject0 \
     libharfbuzz-icu0 \
     libharfbuzz0b \
-    libicu63 \
+    libicu67 \
     libjpeg62-turbo \
     libpq5 \
-    libproj13 \
+    libproj19 \
     librasterlite2-1 \
     libsqlite3-0 \
     libtiff5 \