Fix missing asc file in Linux build artifacts

The asc was created for the AppImage, but never uploaded as an
artifact.

Fixes CURA-11087

.github/workflows/installers.yml

@@ -168,14 +168,22 @@ jobs:
         with:
           name: ${{ steps.filename.outputs.LINUX }}-AppImage
           path: installers
+
+      - name: Download linux installer jobs asc artifacts
+        uses: actions/download-artifact@v2
+        with:
+          name: ${{ steps.filename.outputs.LINUX }}-asc
+          path: installers
 
       - name: Rename Linux installer to nightlies
         run: |
           mv installers/${{ steps.filename.outputs.LINUX }}.AppImage installers/${{ steps.filename.outputs.NIGHTLY_NAME }}-linux-X64.AppImage
+          mv installers/${{ steps.filename.outputs.LINUX }}.AppImage.asc installers/${{ steps.filename.outputs.NIGHTLY_NAME }}-linux-X64.AppImage.asc
 
       - name: Update nightly release for Linux
         run: |
           gh release upload nightly installers/${{ steps.filename.outputs.NIGHTLY_NAME }}-linux-X64.AppImage --clobber
+          gh release upload nightly installers/${{ steps.filename.outputs.NIGHTLY_NAME }}-linux-X64.AppImage.asc  --clobber
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 

.github/workflows/linux.yml

@@ -257,6 +257,14 @@ jobs:
             dist/${{ steps.filename.outputs.INSTALLER_FILENAME }}.AppImage
           retention-days: 5
 
+      - name: Upload the asc
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ steps.filename.outputs.INSTALLER_FILENAME }}-asc
+          path: |
+            dist/${{ steps.filename.outputs.INSTALLER_FILENAME }}.AppImage.asc
+          retention-days: 5
+
       - name: Write the run info
         shell: python
         run: |

packaging/AppImage-builder/create_appimage.py

@@ -38,7 +38,7 @@ def build_appimage(dist_path, version, appimage_filename):
     """
     generate_appimage_builder_config(dist_path, version, appimage_filename)
     create_appimage()
-    sign_appimage(dist_path, appimage_filename)
+    sign_appimage(appimage_filename)
 
 
 def generate_appimage_builder_config(dist_path, version, appimage_filename):
@@ -85,7 +85,7 @@ def create_appimage():
         raise RuntimeError(f"The AppImageTool command returned non-zero: {result}")
 
 
-def sign_appimage(dist_path, appimage_filename):
+def sign_appimage(appimage_filename):
     command = ["gpg", "--yes", "--armor", "--detach-sig", appimage_filename]
     result = subprocess.call(command)
     if result != 0: