Add CI and add version option

.forgejo/workflows/build.yaml

@@ -0,0 +1,67 @@
+on:
+  push:
+  workflow_dispatch:
+    inputs:
+      verbose:
+        description: "Verbose"
+        required: false
+        default: false
+        type: boolean
+
+jobs:
+  test:
+    runs-on: container
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "0.5.5"
+
+      - name: Install
+        run: uv sync
+
+      - name: Build wheel
+        run: uv build --wheel
+
+      - name: Publish Python package (home)
+        env:
+          LOCAL_PYPI_TOKEN: ${{ secrets.LOCAL_PYPI_TOKEN }}
+        run: uv publish --publish-url https://code.philo.ydns.eu/api/packages/philorg/pypi --token $LOCAL_PYPI_TOKEN
+
+      - name: Get version
+        id: version
+        run: echo "version=$(.venv/bin/tinyseady-mailer --version)" >> $GITHUB_OUTPUT
+
+      - name: Workaround for bug of podman-login
+        run: |
+          mkdir -p $HOME/.docker
+          echo "{ \"auths\": {} }" > $HOME/.docker/config.json
+
+      - name: Log in to the container registry (with another workaround)
+        uses: actions/podman-login@v1
+        with:
+          registry: ${{ vars.REGISTRY }}
+          username: ${{ secrets.REGISTRY_USER }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+          auth_file_path: /tmp/auth.json
+
+      - name: Build the container image
+        uses: actions/buildah-build@v1
+        with:
+          image: tinyseady-mailer
+          oci: true
+          labels: tinyseady-mailer
+          tags: latest ${{ steps.version.outputs.version }}
+          containerfiles: |
+            ./Containerfile
+
+      - name: Push the image to the registry
+        uses: actions/push-to-registry@v2
+        with:
+          registry: "docker://${{ vars.REGISTRY }}/${{ vars.ORGANISATION }}"
+          image: tinyseady-mailer
+          tags: latest ${{ steps.version.outputs.version }}

src/tinysteady_mailer/__init__.py

@@ -12,6 +12,19 @@ __doc__ = (
 
 
 def main() -> None:
+    from argparse import ArgumentParser
+
+    parser = ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "-v", "--version", action="store_true", help="Print version and exit"
+    )
+    args = parser.parse_args()
+    if args.version:
+        from importlib.metadata import version
+
+        print(version("tinysteady-mailer"))
+        sys.exit(0)
+
     if CONFIG is None:
         print(__doc__)
         sys.exit(0)