Create workflow to build image and publish it into Docker Hub

Signed-off-by: Artem Barger <artem@bargr.net>

Author: C0rWin

.github/workflows/docker-image.yml

@@ -0,0 +1,72 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches: 
+      - main
+
+permissions:
+  id-token: write
+  contents: read
+  
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout the repository
+      uses: actions/checkout@v3      
+
+    - name: Install Cosign
+      uses: sigstore/cosign-installer@v3.6.0
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+      
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_HUB_USERNAME }}
+        password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+
+    - name: "Setup Docker Meta"
+      id: docker_meta
+      uses: docker/metadata-action@v4.4.0
+      with:
+        images: ${{ secrets.DOCKER_HUB_USERNAME }}/btc
+        tags: |
+          type=sha,format=long
+          type=raw,value=latest
+
+    - name: Debug tags
+      id: debug
+      run: |
+        echo "Tags value is : ${{ steps.docker_meta.outputs.tags }}"
+
+    - name: Build and push Docker image
+      id: build-and-push
+      uses: docker/build-push-action@v5 
+      with:
+        context: .
+        file: ./Dockerfile
+        push: true
+        tags: ${{ steps.docker_meta.outputs.tags }}
+
+    - name: Sign the images with GitHub OIDC Token
+      env:
+        DIGEST: ${{ steps.build-and-push.outputs.digest }}
+        TAGS: ${{ steps.docker_meta.outputs.tags }}
+      run: |
+        images=""
+        for tag in ${TAGS}; do
+          images+="${tag}@${DIGEST} "
+        done
+        cosign sign --yes ${images}
+        
+    - name: Logout from Docker Hub
+      run: docker logout
+
+