feat: initial push

README.md

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+# Push Container Images Forgejo Action
+
+An action that handles pushing multiple images and tags to a given registry.
+
+## Interface
+
+```yml
+inputs:
+  image-prefix:
+    description: Image name prefix to identify images to push.
+    required: true
+  registry-user:
+    description: Username for registry authentication.
+    required: true
+  registry-token:
+    description: Token/password for registry authentication.
+    required: true
+  registry-endpoint:
+    description: Registry endpoint to authenticate with and push to.
+    required: true
+```

action.yml

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+name: Push Container Images
+inputs:
+  image-prefix:
+    description: Image name prefix to identify images to push.
+    required: true
+  registry-user:
+    description: Username for registry authentication.
+    required: true
+  registry-token:
+    description: Token/password for registry authentication.
+    required: true
+  registry-endpoint:
+    description: Registry endpoint to authenticate with and push to.
+    required: true
+runs:
+  using: composite
+  steps:
+      - name: Login to Registry
+        run: podman login -u ${{ inputs.registry-user }} -p ${{ inputs.registry-token }} ${{ inputs.registry-endpoint }}
+      - name: Set image metadata
+        id: image-metadata
+        run: |
+          echo "image-tag=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+      - name: Push tagged images to registry
+        run: |
+          for image in $(podman image ls --format {{.Repository}} | grep localhost/${{ inputs.image-prefix }})
+          do
+            for tag in latest ${{ steps.image-metadata.outputs.image-tag }} ${{ github.ref_name }}
+              do
+                SRC=$image:latest
+                DEST=${{ inputs.registry-endpoint }}/$image:$tag
+                echo "Pushing $SRC to $DEST"
+                podman push $SRC $DEST
+              done
+          done