Adding pkguser creation used to run makepkg for Arch Linux packaging.

After testing GH Actions in my own fork, I confirmed that it is indeed run as a
root user.

Author: daedalus-codes

.github/workflows/package.yml

@@ -155,6 +155,12 @@ jobs:
         with:
           name: sourcegit.${{ matrix.runtime }}
           path: build
+      - name: Create package user
+        run: |
+          apt-get install -y sudo
+          useradd -m pkguser
+          echo "pkguser ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+          chown -R pkguser:pkguser build
       - name: Package
         env:
           VERSION: ${{ inputs.version }}

build/scripts/package.linux.sh

@@ -116,10 +116,16 @@ build_arch_package() {
         ln -rsf resources/aur/opt/sourcegit/sourcegit resources/aur/usr/bin
         cp -r resources/_common/applications resources/aur/usr/share
         cp -r resources/_common/icons resources/aur/usr/share
+        chown -R pkguser:pkguser ./
+
 
         cd "resources/aur/" || exit 1
 
-        makepkg --nodeps
+        if [ "$(id -u)" -eq 0 ]; then
+            sudo -E -u pkguser makepkg --nodeps
+        else
+            makepkg --nodeps
+        fi
 
         cd ../../ # return to previous path