chore: add multi tag example

README.md

@@ -4,7 +4,7 @@ Build OCI images using Kaniko, with the Dockerfile contents provided directly as
 
 ## Usage
 
-Example:
+### Example: Basic Usage, all options.
 
 ```yaml
 jobs:
@@ -21,3 +21,17 @@ jobs:
           username: ${{ secrets.REGISTRY_USERNAME }}
           password: ${{ secrets.REGISTRY_PASSWORD }}
 ```
+
+### Example: Multiple Tags, Default registry
+
+```yaml
+jobs:
+  cowsay:
+    runs-on: docker
+    steps:
+      - uses: https://git.kabelsalat.ch/s3lph/forgejo-kaniko-action@v1
+        with:
+          image: my-user/test-image:latest,my-user/test-image:${{ github.sha }}
+          username: ${{ secrets.REGISTRY_USERNAME }}
+          password: ${{ secrets.REGISTRY_PASSWORD }}
+```

action.yml

@@ -38,4 +38,11 @@ runs:
         exit 1
       fi
 
-      /kaniko/executor --dockerfile Dockerfile --context $GITHUB_WORKSPACE --destination "${{ inputs.image }}"
+      dest_flags=""
+      for dest in $(echo "${{ inputs.image }}" | tr ',' ' '); do
+        dest_flags="$dest_flags --destination=$dest"
+      done
+
+      echo "Destinations: $dest_flags"
+
+      /kaniko/executor --dockerfile Dockerfile --context $GITHUB_WORKSPACE $dest_flags