Update CI/CD

Author: Msprg

.github/workflows/docker.yml

@@ -1,26 +1,72 @@
 name: Build and push
 
+permissions:
+  contents: read
+
+env:
+  IMAGE_NAME: ${{ secrets.DOCKERHUB_USERNAME }}/ssh-key-authority
+
 on:
   push:
     branches: [ "master", "dev" ]
   pull_request:
     branches: [ "master", "dev" ]
+  release:
+    types: [ published ]
 
 jobs:
   build:
+    if: github.event_name != 'release'
     runs-on: ubuntu-latest
     steps:
-    - name: Login to Docker Hub
+    - &checkout-step
+      name: Check out repository
+      uses: actions/checkout@v4
+
+    - &setup-qemu-step
+      name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - &login-step
+      name: Login to Docker Hub
       uses: docker/login-action@v3
       with:
         username: ${{ secrets.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-    - name: Set up Docker Buildx
+    - &setup-buildx-step
+      name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
 
     - name: Build and push
       uses: docker/build-push-action@v6
       with:
+        context: .
+        push: true
+        platforms: linux/amd64,linux/arm64,linux/arm/v7
+        cache-from: type=gha
+        cache-to: type=gha,mode=max
+        tags: |
+          ${{ env.IMAGE_NAME }}:latest-${{ github.ref_name }}
+
+  release:
+    if: github.event_name == 'release'
+    runs-on: ubuntu-latest
+    steps:
+    - *checkout-step
+
+    - *setup-qemu-step
+
+    - *login-step
+
+    - *setup-buildx-step
+
+    - name: Build and push release image
+      uses: docker/build-push-action@v6
+      with:
+        context: .
         push: true
-        tags: ${{ secrets.DOCKERHUB_USERNAME }}/ssh-key-authority:latest-${{ vars.GITHUB_REF_NAME }}
+        platforms: linux/amd64,linux/arm64,linux/arm/v7
+        tags: |
+          ${{ env.IMAGE_NAME }}:${{ github.event.release.tag_name }}
+          ${{ env.IMAGE_NAME }}:latest