fix: run docker as runner user to fix artifact upload

.gitea/workflows/build.yml

@@ -19,6 +19,7 @@ jobs:
       - name: Pack mission folder into PBO
         run: |
           docker run --rm \
+            --user "$(id -u):$(id -g)" \
             -v "${{ github.workspace }}:/workspace" \
             -w /workspace \
             arwynfr/armake2:debian \
@@ -29,6 +30,7 @@ jobs:
       - name: Verify PBO integrity
         run: |
           docker run --rm \
+            --user "$(id -u):$(id -g)" \
             -v "${{ github.workspace }}:/workspace" \
             -w /workspace \
             arwynfr/armake2:debian \