add action and example

action.yml

@@ -0,0 +1,37 @@
+name: Publish package
+description: build and publish an Arch package
+
+inputs:
+  username:
+    description: 'Gitea username'
+    required: true
+  token:
+    description: 'Gitea PAT'
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    
+    - name: Create publish script
+      shell: bash
+      run: |
+        echo "#!/bin/bash
+        echo '📤️ Uploading package to ${{ gitea.server_url }} ...'
+        curl -f --user \"\$username:\$token\" \
+             --upload-file ./*.tar.zst \
+             '${{ gitea.server_url }}/api/packages/packages/arch/microverse'
+        " > "./post-entrypoint.sh"
+        chmod +x "./post-entrypoint.sh"
+        git config --global user.name 'Guy Incognito'
+        git config --global user.email 'user@local'
+        git add "./post-entrypoint.sh"
+        git commit -m "persist script"
+    
+    - name: Build package
+      uses: https://git.sanin.dev/packages/build-publish-action/@build
+      with:
+        username: "${{ inputs.username }}"
+        token: ${{ inputs.token }}

workflows/publish.yml

@@ -0,0 +1,18 @@
+name: Publish
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Build and publish
+    permissions:
+      contents: read
+    steps:
+      - name: Build and publish
+        uses: https://git.sanin.dev/packages/build-publish-action@master
+        with:
+          username: "${{ secrets.USERNAME }}"
+          token: "${{ secrets.TOKEN }}"