Bugfix: mqtt wont connect #1

Improvement: Add Dockerfile #2, compose, License, github workflow

.github/workflows/docker-publish.yml

@@ -0,0 +1,45 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*.*.*'
+
+jobs:
+  build-and-push:
+    name: Build image & push
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    steps:
+      # Step 1: Check out the repository
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      # Step 2: Extract version from __version__.py
+      - name: Extract version
+        run: |
+          VERSION=$(python -c "exec(open('__version__.py').read()); print(__version__)")
+          echo "Version is $VERSION"
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+      # Step 3: Log in to GitHub Container Registry
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # Step 4: Build the Docker image
+      - name: Build Docker image
+        run: |
+          docker build -t ghcr.io/${{ github.repository }}:${{ env.VERSION }} .
+
+      # Step 5: Push the Docker image to GHCR
+      - name: Push Docker image
+        run: |
+          docker push ghcr.io/${{ github.repository }}:${{ env.VERSION }}