platform=container-image=docker://gcr.io/cloud-marketplace/google/rbe-ubuntu16-04@sha256:f6568d8168b14aafd1b707019927a63c2d37113a03bcee188218f99bd0327ea1,dockerChrootPath=.,dockerRuntime=runsc server_address=unix:///tmp/reproxy.sock labels=type=compile,compiler=clang,lang=cpp exec_root=/ env_var_allowlist=PATH