pull out reusable tag check action

Author: pedroslopez

.github/actions/check-docker-tag/action.yml

@@ -0,0 +1,26 @@
+name: 'Check Docker Tag Exists'
+description: 'Check if a Docker tag exists on DockerHub to prevent overwrites'
+inputs:
+  image_name:
+    description: 'Docker image name (e.g. airbyte/source-declarative-manifest)'
+    required: true
+  tag:
+    description: 'Docker tag to check'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: "Check for existing tag (${{ inputs.image_name }}:${{ inputs.tag }})"
+      shell: bash
+      run: |
+        tag="${{ inputs.image_name }}:${{ inputs.tag }}"
+        if [ -z "$tag" ]; then
+          echo "Error: tag is not set."
+          exit 1
+        fi
+        echo "Checking if tag '$tag' exists on DockerHub..."
+        if DOCKER_CLI_EXPERIMENTAL=enabled docker manifest inspect "$tag" > /dev/null 2>&1; then
+          echo "The tag '$tag' already exists on DockerHub. Skipping publish to prevent overwrite."
+          exit 1
+        fi
+        echo "No existing tag '$tag' found. Proceeding with publish."

.github/workflows/publish.yml

@@ -209,18 +209,10 @@ jobs:
 
       - name: "Check for existing tag (version: ${{ env.VERSION || 'none' }} )"
         if: env.VERSION != ''
-        run: |
-          tag="airbyte/source-declarative-manifest:${{ env.VERSION }}"
-          if [ -z "$tag" ]; then
-            echo "Error: VERSION is not set. Ensure the tag follows the format 'refs/tags/vX.Y.Z'."
-            exit 1
-          fi
-          echo "Checking if tag '$tag' exists on DockerHub..."
-          if DOCKER_CLI_EXPERIMENTAL=enabled docker manifest inspect "$tag" > /dev/null 2>&1; then
-            echo "The tag '$tag' already exists on DockerHub. Skipping publish to prevent overwrite."
-            exit 1
-          fi
-          echo "No existing tag '$tag' found. Proceeding with publish."
+        uses: ./.github/actions/check-docker-tag
+        with:
+          image_name: airbyte/source-declarative-manifest
+          tag: ${{ env.VERSION }}
 
       - name: "Build and push (sha tag: '${{ github.sha }}')"
         # Only run if the version is not set
@@ -298,18 +290,10 @@ jobs:
 
       - name: "Check for existing tag (version: ${{ env.VERSION || 'none' }} )"
         if: env.VERSION != ''
-        run: |
-          tag="airbyte/manifest-server:${{ env.VERSION }}"
-          if [ -z "$tag" ]; then
-            echo "Error: VERSION is not set. Ensure the tag follows the format 'refs/tags/vX.Y.Z'."
-            exit 1
-          fi
-          echo "Checking if tag '$tag' exists on DockerHub..."
-          if DOCKER_CLI_EXPERIMENTAL=enabled docker manifest inspect "$tag" > /dev/null 2>&1; then
-            echo "The tag '$tag' already exists on DockerHub. Skipping publish to prevent overwrite."
-            exit 1
-          fi
-          echo "No existing tag '$tag' found. Proceeding with publish."
+        uses: ./.github/actions/check-docker-tag
+        with:
+          image_name: airbyte/manifest-server
+          tag: ${{ env.VERSION }}
 
       - name: "Build and push (sha tag: '${{ github.sha }}')"
         # Only run if the version is not set