Fix git error.

brocaar · brocaar · commit dc2ef20ca5b2 · 2022-04-18T15:38:33.000+01:00
diff --git a/Dockerfile-devel b/Dockerfile-devel
@@ -11,4 +11,5 @@ RUN mkdir -p $PROJECT_PATH
 COPY . $PROJECT_PATH
 WORKDIR $PROJECT_PATH
 
+RUN git config --global --add safe.directory /chirpstack-gateway-bridge
 RUN make dev-requirements
