Replace Docker Hub autobuilds with GitHub Actions workflow

.github/workflows/docker.yml

@@ -0,0 +1,86 @@
+name: Docker
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+  schedule:
+    # Weekly rebuild to pick up patched base images
+    - cron: "0 4 * * 1"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+env:
+  IMAGE: tecktron/python-bjoern
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python: ["3.11", "3.12", "3.13", "3.14", "latest"]
+        variant: ["", "-slim"]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+
+      - name: Resolve base image and tag
+        id: vars
+        env:
+          PY: ${{ matrix.python }}
+          VARIANT: ${{ matrix.variant }}
+        run: |
+          if [ "$PY" = "latest" ]; then
+            # Floating tags: python:latest -> latest, python:slim -> latest-slim
+            base="${VARIANT#-}"
+            base="${base:-latest}"
+            tag="latest${VARIANT}"
+          else
+            base="${PY}${VARIANT}"
+            tag="python-${PY}${VARIANT}"
+          fi
+          echo "base=$base" >> "$GITHUB_OUTPUT"
+          echo "tag=$tag" >> "$GITHUB_OUTPUT"
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@99012661954931238ded8c8b007157a8430204e1 # v4.4.0
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
+
+      - name: Log in to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@dc802804100637a589fabce1cb79ff13a1411302 # v6.2.0
+        with:
+          images: ${{ env.IMAGE }}
+          flavor: latest=false
+          tags: type=raw,value=${{ steps.vars.outputs.tag }}
+
+      - name: Build and push
+        uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          build-args: PYTHON_TAG=${{ steps.vars.outputs.base }}
+          pull: true
+          # Scheduled runs skip the cache so apt and pip layers are refreshed too
+          no-cache: ${{ github.event_name == 'schedule' }}
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha,scope=${{ steps.vars.outputs.tag }}
+          cache-to: type=gha,mode=max,scope=${{ steps.vars.outputs.tag }}

Dockerfile

@@ -1,9 +1,11 @@
-FROM python:latest
+ARG PYTHON_TAG=latest
+FROM python:${PYTHON_TAG}
 
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get clean && apt-get update && \
     apt-get -y install --no-install-recommends \
     gcc \
+    libc6-dev \
     libev-dev \
     && rm -rf /var/lib/apt/lists/*
 

README.md

@@ -1,9 +1,12 @@
 # Python Bjoern Docker Container
 
 A Docker container to run a WSGI Python application using
-[Bjoern](https://github.com/jonashaag/bjoern). Images support python 3.6+ and are
+[Bjoern](https://github.com/jonashaag/bjoern). Images support python 3.11+ and are
 based on the [official python containers](https://hub.docker.com/_/python). The `-slim` versions are based on the similarly named python versions.
 
+Published tags (`linux/amd64` and `linux/arm64`, rebuilt weekly):
+`python-3.11`, `python-3.12`, `python-3.13`, `python-3.14`, `latest` (each also with a `-slim` variant).
+
 [Pull from Docker Hub](https://hub.docker.com/r/tecktron/python-bjoern/)
 
 [View on GitHub](https://github.com/Tecktron/docker-python-bjoern)