chore: add docker release workflow

Author: portswigger-tim

.github/workflows/docker-release.yml

@@ -0,0 +1,49 @@
+name: Docker Release
+on:
+  release:
+    types:
+    - published
+jobs:
+  push_to_registry:
+    name: Push Docker image to GitHub Packages
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    strategy:
+      matrix:
+        app:
+        - ical-simplejson-proxy
+    steps:
+    - name: Check out the repo
+      uses: actions/checkout@v3
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v3
+      with:
+        # list of Docker images to use as base name for tags
+        images: |
+          ghcr.io/${{ github.repository_owner }}/${{ matrix.app }}
+        # generate Docker tags based on the following events/attributes
+        tags: |
+          type=schedule
+          type=ref,event=branch
+          type=ref,event=pr
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=semver,pattern={{major}}
+          type=sha
+    - name: Log in to GitHub Container Registry
+      uses: docker/login-action@v1
+      if: github.event_name != 'pull_request'
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Build and push
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ matrix.app }}
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}

.github/workflows/test-and-lint.yml

@@ -2,12 +2,12 @@ name: Test and Lint
 on:
   push:
     branches:
-      - main
+    - main
   pull_request:
     branches:
-      - main
+    - main
   schedule:
-    - cron: '30 11 * * *'
+  - cron: '30 11 * * *'
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -21,18 +21,18 @@ jobs:
         - '3.9'
         - '3.10'
     steps:
-      - uses: actions/checkout@v3
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Install dependencies
-        run: |
-          cd ${{ matrix.app }}
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip install tox tox-gh-actions
-      - name: Test with Tox
-        run: |
-          cd ${{ matrix.app }}
-          tox
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        cd ${{ matrix.app }}
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+        pip install tox tox-gh-actions
+    - name: Test with Tox
+      run: |
+        cd ${{ matrix.app }}
+        tox