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README.md

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+---
+gitea: none
+include_toc: true
+---
+
+# Docker Push Action
+
+A composite action to tag and push Docker images based on git context.
+
+## Tag Logic
+
+| Event          | Condition        | Tags Pushed                                |
+|----------------|------------------|--------------------------------------------|
+| `push`         | Tag `v*.*.*`     | `latest`, `<version>` (without `v` prefix) |
+| `push`         | Branch `main`    | `latest`                                   |
+| `push`         | Branch `develop` | `develop`                                  |
+| `pull_request` | Any              | `pr<number>`                               |
+
+## Usage
+```yaml
+- name: Load Docker image
+  run: docker load < my-image.tar.gz
+
+- name: Push Docker tags
+  uses: https://labs.phundrak.com/phundrak/docker-push-action@v1
+  with:
+    registry: labs.phundrak.com
+    registry-username: ${{ secrets.DOCKER_USERNAME }}
+    registry-password: ${{ secrets.DOCKER_PASSWORD }}
+    image-name: phundrak/my-app
+    local-image: my-app:latest
+    event-name: ${{ github.event_name }}
+    ref: ${{ github.ref }}
+    ref-type: ${{ github.ref_type }}
+    ref-name: ${{ github.ref_name }}
+    pr-number: ${{ github.event.pull_request.number }}
+```
+
+## Inputs
+
+| Input               | Required | Description                                    |
+|---------------------|----------|------------------------------------------------|
+| `registry`          | Yes      | Docker registry URL                            |
+| `registry-username` | Yes      | Docker registry username                       |
+| `registry-password` | Yes      | Docker registry password                       |
+| `image-name`        | Yes      | Full image name (e.g., `phundrak/my-app`)      |
+| `local-image`       | Yes      | Local image to tag and push                    |
+| `event-name`        | Yes      | Pass `${{ github.event_name }}`                |
+| `ref`               | Yes      | Pass `${{ github.ref }}`                       |
+| `ref-type`          | Yes      | Pass `${{ github.ref_type }}`                  |
+| `ref-name`          | Yes      | Pass `${{ github.ref_name }}`                  |
+| `pr-number`         | No       | Pass `${{ github.event.pull_request.number }}` |
+
+## Outputs
+
+| Output        | Description                                   |
+|---------------|-----------------------------------------------|
+| `pushed-tags` | Space-separated list of tags that were pushed |

action.yml

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+name: 'Push Docker Tags'
+description: 'Tag and push Docker images based on git context'
+
+inputs:
+  registry:
+    description: 'Docker registry URL'
+    required: true
+  registry-username:
+    description: 'Docker registry username'
+    required: true
+  registry-password:
+    description: 'Docker registry password'
+    required: true
+  image-name:
+    description: 'Full image name (e.g., phundrak/my-app)'
+    required: true
+  local-image:
+    description: 'Local image to tag and push'
+    required: true
+  event-name:
+    description: 'GitHub/Gitea event name (pass github.event_name)'
+    required: true
+  ref:
+    description: 'Git ref (pass github.ref)'
+    required: true
+  ref-type:
+    description: 'Git ref type (pass github.ref_type)'
+    required: true
+  ref-name:
+    description: 'Git ref name (pass github.ref_name)'
+    required: true
+  pr-number:
+    description: 'Pull request number (pass github.event.pull_request.number)'
+    required: false
+    default: ''
+
+outputs:
+  pushed-tags:
+    description: 'Space-separated list of tags that were pushed'
+    value: ${{ steps.push.outputs.tags }}
+
+runs:
+  using: composite
+  steps:
+    - name: Log in to Docker Registry
+      shell: bash
+      run: |
+        echo "${{ inputs.registry-password }}" | docker login ${{ inputs.registry }} -u ${{ inputs.registry-username }} --password-stdin
+
+    - name: Determine tags and push images
+      id: push
+      shell: bash
+      run: |
+        set -euo pipefail
+
+        REGISTRY="${{ inputs.registry }}"
+        IMAGE_NAME="${{ inputs.image-name }}"
+        LOCAL_IMAGE="${{ inputs.local-image }}"
+        PUSHED_TAGS=""
+
+        echo "Event: ${{ inputs.event-name }}"
+        echo "Ref: ${{ inputs.ref }}"
+        echo "Ref type: ${{ inputs.ref-type }}"
+
+        push_tag() {
+          local tag="$1"
+          echo "Tagging and pushing: ${REGISTRY}/${IMAGE_NAME}:${tag}"
+          docker tag "${LOCAL_IMAGE}" "${REGISTRY}/${IMAGE_NAME}:${tag}"
+          docker push "${REGISTRY}/${IMAGE_NAME}:${tag}"
+          PUSHED_TAGS="${PUSHED_TAGS}${tag} "
+        }
+
+        if [[ "${{ inputs.event-name }}" == "push" && "${{ inputs.ref-type }}" == "tag" ]]; then
+          TAG_VERSION="${{ inputs.ref-name }}"
+          TAG_VERSION="${TAG_VERSION#v}"
+          push_tag "latest"
+          push_tag "${TAG_VERSION}"
+
+        elif [[ "${{ inputs.event-name }}" == "push" && "${{ inputs.ref }}" == "refs/heads/develop" ]]; then
+          push_tag "develop"
+
+        elif [[ "${{ inputs.event-name }}" == "pull_request" ]]; then
+          if [[ -z "${{ inputs.pr-number }}" ]]; then
+            echo "::error::PR number is required for pull_request events"
+            exit 1
+          fi
+          push_tag "pr${{ inputs.pr-number }}"
+
+        elif [[ "${{ inputs.event-name }}" == "push" && "${{ inputs.ref }}" == "refs/heads/main" ]]; then
+          push_tag "latest"
+
+        else
+          echo "::error::Unknown event or ref combination: event=${{ inputs.event-name }}, ref=${{ inputs.ref }}"
+          exit 1
+        fi
+
+        echo "tags=${PUSHED_TAGS}" >> "$GITHUB_OUTPUT"
+
+    - name: Log out from Docker Registry
+      if: always()
+      shell: bash
+      run: docker logout ${{ inputs.registry }}