1COPY --from=composer /usr/bin/composer /usr/bin/composer 2 3COPY --from=grpc-base /github/grpc/cmake/build/third_party/protobuf/protoc ${'\\'} 4 /usr/local/bin/protoc 5 6COPY --from=grpc-base /github/grpc/cmake/build/grpc_php_plugin ${'\\'} 7 /usr/local/bin/protoc-gen-grpc 8 9COPY --from=grpc-base ${'\\'} 10 /usr/local/lib/php/extensions/no-debug-non-zts-20190902/grpc.so ${'\\'} 11 /usr/local/lib/php/extensions/no-debug-non-zts-20190902/grpc.so 12