add image build

Author: walnuts1018

.github/workflows/docker.yaml

@@ -0,0 +1,86 @@
+name: Build Docker Image
+on:
+  release:
+    types: [published]
+
+jobs:
+  ImageBuild:
+    name: Build Code-Server-Operator Custom Docker Image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slack notification of build start
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_USERNAME: GitHub Actions
+          SLACK_COLOR: "#4381de"
+          SLACK_ICON: "https://github.githubassets.com/images/modules/logos_page/GitHub-Mark.png"
+          SLACK_TITLE: Start Code-Server-Operator image build
+          SLACK_MESSAGE: |
+            Run number : #${{ github.run_number }}
+
+      - name: Check out
+        uses: actions/checkout@v4
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: walnuts1018
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: latest
+
+      - name: Get Tag from Release
+        run: echo "ImageTag=${GITHUB_REF##*/}" >> $GITHUB_ENV
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v5
+        with:
+          push: true
+          context: .
+          platforms: linux/amd64,linux/arm64
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          tags: |
+            ghcr.io/walnuts1018/code-server-operator:latest
+            ghcr.io/walnuts1018/code-server-operator:${{ github.event.release.tag_name }}
+
+  SucceessNotification:
+    if: ${{ success() }}
+    name: Send Success Message
+    needs: [ImageBuild]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send Message to Slack
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_USERNAME: GitHub Actions
+          SLACK_ICON: "https://github.githubassets.com/images/modules/logos_page/GitHub-Mark.png"
+          SLACK_TITLE: Code-Server-Operator image build succeeded
+          SLACK_MESSAGE: |
+            Image: Code-Server-Operator
+            Run number : #${{ github.run_number }}
+
+  FailureAlert:
+    if: ${{ failure() }}
+    name: Notify failure
+    needs: [ImageBuild]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Send Failure Alert to Slack
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_USERNAME: GitHub Actions
+          SLACK_ICON: "https://github.githubassets.com/images/modules/logos_page/GitHub-Mark.png"
+          SLACK_TITLE: Code-Server-Operator image build failed
+          SLACK_COLOR: danger
+          SLACK_MESSAGE: |
+            Image: Code-Server-Operator
+            Run number : #${{ github.run_number }}