Migrate to python (#265)

* Add initial python migration

* Add pylint

* Add pre-commit

* Add Dockerfile

* Add expression matching

* Use shelve to store previous matches

* Add notifications

* Calculate post age

* Update README.md

.github/workflows/push-container.yml

@@ -0,0 +1,52 @@
+name: Publish Container
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  push_to_registry:
+    name: Push to container registry
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Prepare
+        id: prep
+        run: |
+          IMAGE_NAME=ghcr.io/${{ github.repository_owner }}/rfd-notify
+          VERSION=${GITHUB_REF##*/}
+
+          if [[ $GITHUB_REF == refs/heads/main ]]; then
+            VERSION=1
+          fi
+
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
+
+          TAGS="${IMAGE_NAME}:${VERSION}"
+
+          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS,${IMAGE_NAME}:1"
+          fi
+
+          echo ::set-output name=tags::${TAGS}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GitHub Packages Docker Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Push to Packages
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.prep.outputs.tags }}