preliminary build workflow

.gitea/workflows/build-appimage.yaml

@@ -0,0 +1,32 @@
+name: Build AppImage
+run-name: ${{ gitea.actor }} is building THE AppImage 🚀
+on: [push]
+
+jobs:
+  Explore-Gitea-Actions:
+    runs-on: bullseye
+    steps:
+      - run: echo "🎉 The job was automatically triggered by a ${{ gitea.event_name }} event."
+      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by Gitea!"
+      - run: echo "🔎 The name of your branch is ${{ gitea.ref }} and your repository is ${{ gitea.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - run: echo "💡 The ${{ gitea.repository }} repository has been cloned to the runner."
+      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+      - name: Update version info
+        run: |
+          ./${{ gitea.workspace }}/tools/update_version.py
+      - name: Prepare GPG
+        run: |
+          /usr/lib/gnupg/gpg-preset-passphrase --preset --passphrase ${GPG_PASSPHRASE} ${GPG_KEYGRIP}
+      - name: Build AppImage
+        run: ./${{ gitea.workspace }}/tools/build.sh
+        env:
+          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
+          GPG_KEYGRIP: ${{ env.GPG_KEYGRIP }}
+      - name: Upload AppImage
+        run: ./{{ gitea.workspace }}/tools/upload_gitea.sh
+        env:
+          UPLOAD_TOKEN: ${{ env.GITEA_TOKEN }}
+          UPLOAD_USER: ${{ env.GITEA_USER }}
+      - run: echo "🍏 This job's status is ${{ job.status }}."