ci: Properly ignore GDC build failures (for now)

Author: ximion

.github/workflows/build-test.yml

@@ -6,16 +6,17 @@ jobs:
   build-debian-testing:
     name: Debian Testing
     runs-on: ubuntu-latest
-    continue-on-error: ${{ matrix.dc == 'gdc' }}
     strategy:
       matrix:
         dc: [ldc, gdc]
+
     steps:
     - uses: actions/checkout@v2
 
     - name: Create Build Environment
       run: cd tests/ci/ && docker build -t asgen -f ./Dockerfile .
 
     - name: Build & Test
+      continue-on-error: ${{ matrix.dc == 'gdc' }}
       run: docker run -t -e DC=${{ matrix.dc }} -v `pwd`:/build asgen
            ./tests/ci/build-and-test.sh