feat(ci): add GitHub Actions workflow for building and pushing Docker image to GitHub Container Registry

.github/workflows/docker-build-push.yaml

@@ -0,0 +1,48 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/sublist3r
+          tags: |
+            latest
+            type=ref,event=branch
+            type=sha
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,12 +1,12 @@
-FROM python:3.9-slim
-
-# Install Sublist3r
-RUN apt-get update && apt-get install -y git 
-RUN git clone https://github.com/aboul3la/Sublist3r.git
-RUN pip install -r Sublist3r/requirements.txt
-
-# Make port 80 available to the world outside this container
-EXPOSE 80
-
-# Run Sublist3r when the container launches
+FROM python:3.9-slim
+
+# Install Sublist3r
+RUN apt-get update && apt-get install -y git 
+RUN git clone https://github.com/aboul3la/Sublist3r.git
+RUN pip install -r Sublist3r/requirements.txt
+
+# Make port 80 available to the world outside this container
+EXPOSE 80
+
+# Run Sublist3r when the container launches
 ENTRYPOINT [ "sh", "-c", "python", "Sublist3r/sublist3r.py" ]