fix: change sources shell permission denied

workspace/Dockerfile

@@ -50,6 +50,7 @@ ARG UBUNTU_SOURCE
 COPY ./sources.sh /tmp/sources.sh
 
 RUN if [ ${CHANGE_SOURCE} = true ]; then \
+    chmod +x /tmp/sources.sh && \
     /bin/sh -c /tmp/sources.sh && \
     rm -rf /tmp/sources.sh \
 ;fi