Generate Docker container action with Python

Author: br3ndonland

.github/actions/run-docker-container/action.yml

@@ -119,25 +119,25 @@ runs:
     env:
       ACTION_REF: ${{ github.action_ref }}
       ACTION_REPO: ${{ github.action_repository }}
-  - name: Set Docker image name and tag
+  - name: Check out action repo
+    uses: actions/checkout@v4
+    with:
+      path: action-repo
+      ref: ${{ steps.set-repo-and-ref.outputs.ref }}
+      repository: ${{ steps.set-repo-and-ref.outputs.repo }}
+  - name: Create Docker container action
     run: |
-      # Set Docker image name and tag
-      # if action run was triggered by a pull request to this repo,
-      # build image from Dockerfile because it has not been pushed to GHCR,
-      # else pull image from GHCR
-      if [[ $GITHUB_EVENT_NAME == "pull_request" ]] &&
-        [[ $GITHUB_REPOSITORY == "pypa/gh-action-pypi-publish" ]]; then
-        IMAGE="../../../Dockerfile"
-      else
-        REF=${{ steps.set-repo-and-ref.outputs.ref }}
-        REPO=${{ steps.set-repo-and-ref.outputs.repo }}
-        IMAGE="docker://ghcr.io/$REPO:${REF/'/'/'-'}"
-      fi
-      FILE=".github/actions/run-docker-container/action.yml"
-      sed -i -e "s|{{image}}|$IMAGE|g" "$FILE"
+      # Create Docker container action
+      python -m pip install -r requirements/github-actions.txt
+      python create-docker-action.py ${{ steps.set-image.outputs.image }}
+    env:
+      EVENT: ${{ github.event_name }}
+      REF: ${{ steps.set-repo-and-ref.outputs.ref }}
+      REPO: ${{ steps.set-repo-and-ref.outputs.repo }}
     shell: bash
+    working-directory: action-repo
   - name: Run Docker container
-    uses: ./.github/actions/run-docker-container
+    uses: ./action-repo/.github/actions/run-docker-container
     with:
       user: ${{ inputs.user }}
       password: ${{ inputs.password }}

action.yml

@@ -0,0 +1,88 @@
+import os
+import pathlib
+
+import yaml
+
+DESCRIPTION = 'description'
+REQUIRED = 'required'
+
+EVENT = os.environ['EVENT']
+REF = os.environ['REF']
+REPO = os.environ['REPO']
+
+
+def set_image(event: str, ref: str, repo: str) -> str:
+    if event == 'pull_request' and 'gh-action-pypi-publish' in repo:
+        return '../../../Dockerfile'
+    docker_ref = ref.replace('/', '-')
+    return f'docker://ghcr.io/{repo}:{docker_ref}'
+
+
+image = set_image(EVENT, REF, REPO)
+
+action = {
+    'name': '🏃',
+    DESCRIPTION: (
+        'Run Docker container to upload Python distribution packages to PyPI'
+    ),
+    'inputs': {
+        'user': {DESCRIPTION: 'PyPI user', REQUIRED: False},
+        'password': {
+            DESCRIPTION: 'Password for your PyPI user or an access token',
+            REQUIRED: False,
+        },
+        'repository-url': {
+            DESCRIPTION: 'The repository URL to use',
+            REQUIRED: False,
+        },
+        'packages-dir': {
+            DESCRIPTION: 'The target directory for distribution',
+            REQUIRED: False,
+        },
+        'verify-metadata': {
+            DESCRIPTION: 'Check metadata before uploading',
+            REQUIRED: False,
+        },
+        'skip-existing': {
+            DESCRIPTION: (
+                'Do not fail if a Python package distribution'
+                ' exists in the target package index'
+            ),
+            REQUIRED: False,
+        },
+        'verbose': {DESCRIPTION: 'Show verbose output.', REQUIRED: False},
+        'print-hash': {
+            DESCRIPTION: 'Show hash values of files to be uploaded',
+            REQUIRED: False,
+        },
+        'attestations': {
+            DESCRIPTION: (
+                '[EXPERIMENTAL]'
+                ' Enable experimental support for PEP 740 attestations.'
+                ' Only works with PyPI and TestPyPI via Trusted Publishing.'
+            ),
+            REQUIRED: False,
+        }
+    },
+    'runs': {
+        'using': 'docker',
+        'image': image,
+        'args': [
+            '${{ inputs.user }}',
+            '${{ inputs.password }}',
+            '${{ inputs.repository-url }}',
+            '${{ inputs.packages-dir }}',
+            '${{ inputs.verify-metadata }}',
+            '${{ inputs.skip-existing }}',
+            '${{ inputs.verbose }}',
+            '${{ inputs.print-hash }}',
+            '${{ inputs.attestations }}',
+        ],
+    },
+}
+
+action_path = pathlib.Path('.github/actions/run-docker-container/action.yml')
+action_path.parent.mkdir(parents=True, exist_ok=True)
+
+with action_path.open(mode='w', encoding='utf-8') as file:
+    yaml.dump(action, file, allow_unicode=True, sort_keys=False)

create-docker-action.py

@@ -0,0 +1,2 @@
+# NOTE: used by create-docker-action.py
+pyyaml

requirements/github-actions.in

@@ -0,0 +1,8 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    pip-compile --allow-unsafe --config=../.pip-tools.toml --output-file=github-actions.txt --strip-extras github-actions.in
+#
+pyyaml==6.0.1
+    # via -r github-actions.in