Add docker support (#14)

* Add Dockerfile

* Add docker image building action

.github/workflows/publish-docker.yaml

@@ -0,0 +1,66 @@
+name: 'Build and Publish Docker Image'
+
+env:
+  platforms: linux/amd64,linux/arm64
+
+on:
+  push:
+    branches:
+    - main
+    tags:
+    - v*
+    paths-ignore:
+    - 'docs/**'
+    - '**/*.md'
+  pull_request:
+    paths-ignore:
+    - 'docs/**'
+    - '**/*.md'
+
+jobs:
+  buildAndPush:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
+    - uses: docker/metadata-action@v5
+      id: meta
+      with:
+        images: |
+          ghcr.io/${{ github.repository_owner }}/kicktipp
+        tags: |
+          type=semver,pattern={{version}}
+          type=schedule
+          type=ref,event=branch
+          type=ref,event=tag
+          type=ref,event=pr
+          type=sha
+        flavor: |
+          latest=${{ github.ref == 'refs/heads/main' }}
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+      with:
+        image: tonistiigi/binfmt:latest
+        platforms: ${{env.platforms}}
+    - name: Set up Docker Buildx
+      timeout-minutes: 5
+      uses: docker/setup-buildx-action@v3
+      with:
+        version: latest
+    - name: Login to GHCR
+      if: github.event_name != 'pull_request'
+      uses: docker/login-action@v3
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Build and push
+      timeout-minutes: 100
+      uses: docker/build-push-action@v5
+      with:
+        context: .
+        platforms: ${{env.platforms}}
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+FROM python:3.11 AS builder
+COPY requirements.txt .
+
+RUN pip install --user -r requirements.txt
+
+FROM python:3.11-slim
+WORKDIR /code
+
+# copy only the dependencies installation from the 1st stage image
+COPY --from=builder /root/.local /root/.local
+COPY ./src .
+
+# update PATH environment variable
+ENV PATH=/root/.local:$PATH
+
+ENTRYPOINT [ "python", "auto_submit_tips.py" ]