feat: add GitHub Actions workflow for building and publishing Docker image

- Add Docker login step
- Set up QEMU
- Set up Docker Buildx
- Build and push Docker image

This feature allows for automated building and publishing of Docker images to Docker Hub. It includes proper setup of QEMU and Docker Buildx for cross-platform compatibility and efficient image building.

.github/workflows/docker.yml

@@ -0,0 +1,46 @@
+name: Build and Publish Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: docker.io
+  IMAGE_NAME: ${{ github.event.repository.name }}
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Get version
+        id: get_version
+        run: |
+          GIT_VERSION=$(git describe --dirty --always --long --abbrev=7 --tags)
+          VERSION="v${GIT_VERSION}"
+          echo "VERSION=${VERSION}" >> $GITHUB_ENV
+          echo "GIT_VERSION=${GIT_VERSION}" >> $GITHUB_ENV
+          echo "LATEST_TAG=${{ env.REGISTRY }}/${{ vars.DOCKERHUB_USER }}/${{ env.IMAGE_NAME }}:latest" >> $GITHUB_OUTPUT"
+          echo "VERSION_TAG=${{ env.REGISTRY }}/${{ vars.DOCKERHUB_USER }}/${{ env.IMAGE_NAME }}:${VERSION}" >> $GITHUB_OUTPUT"
+      -
+        name: Login to ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ vars.DOCKERHUB_USER }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      -
+        name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ env.LATEST_TAG }},${{ env.VERSION_TAG }}