List docker images.

Author: Alexhuszagh

.github/workflows/ci.yml

@@ -283,7 +283,10 @@ jobs:
         id: build-docker-image
         if: steps.prepare-meta.outputs.has-image
         timeout-minutes: 120
-        run: cargo xtask build-docker-image -v "${TARGET}${SUB:+.$SUB}"
+        # TODO(ahuszagh) Remove this multiline and docker images
+        run: |
+          docker images
+          cargo xtask build-docker-image -v "${TARGET}${SUB:+.$SUB}"
         env:
           TARGET: ${{ matrix.target }}
           SUB: ${{ matrix.sub }}