Arch publish workflow and build with docker

.github/workflows/aur-pub.yml

@@ -0,0 +1,20 @@
+name: aur-pub
+on:
+  push:
+    tags:
+      - "*"
+jobs:
+  aur-publish:
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Publish AUR package
+        uses: KSXGitHub/github-actions-deploy-aur@2.2.3
+        with:
+          pkgname: my-awesome-package
+          pkgbuild: ./dist/pkgs/arch/PKGBUILD
+          commit_username: ${{ secrets.AUR_USERNAME }}
+          commit_email: ${{ secrets.AUR_EMAIL }}
+          ssh_private_key: ${{ secrets.AUR_KEY }}
+          commit_message: Update AUR package
+          ssh_keyscan_types: rsa,dsa,ecdsa,ed25519