Fix being able to use docker or podman

Author: MarkusPettersson98

.github/workflows/desktop-e2e.yml

@@ -143,6 +143,8 @@ jobs:
         uses: actions/checkout@v4
       - name: Build test framework
         working-directory: test
+        env:
+          CONTAINER_RUNNER: docker
         run: ./scripts/container-run.sh ./scripts/build.sh
       - uses: actions/upload-artifact@v3
         with:

test/scripts/container-run.sh

@@ -23,7 +23,7 @@ if [[ "$(uname -s)" != "Linux" ]]; then
 fi
 
 container_image=$(cat "$REPO_DIR/building/linux-container-image.txt")
-podman build -t mullvadvpn-app-tests --build-arg IMAGE="${container_image}" .
+"$CONTAINER_RUNNER" build -t mullvadvpn-app-tests --build-arg IMAGE="${container_image}" .
 
 exec "$CONTAINER_RUNNER" run --rm -it \
     -v "${CARGO_REGISTRY_VOLUME_NAME}":/root/.cargo/registry:Z \