buildx failed with: ERROR: failed to solve: process "/bin/sh -c if [ -n \"${CAA_SRC}\" ]; then rm -rf cloud-api-adaptor && git clone ${CAA_SRC} cloud-api-adaptor; fi && if [ -n \"${CAA_SRC_REF}\" ]; then cd cloud-api-adaptor && git fetch origin ${CAA_SRC_REF} && git checkout FETCH_HEAD -b ${CAA_SRC_REF} ; fi" did not complete successfully: exit code: 128