Removed unnecessary RUN statements and combined some of the RUN statement into a single line. The runtime performance is seen as follows: pre-change: PASS: docker_cli_build_test.go:3826: DockerSuite.TestBuildUsersAndGroups 63.074s post-change: PASS: docker_cli_build_test.go:3826: DockerSuite.TestBuildUsersAndGroups 49.698s Signed-off-by: Anil Belur <askb23@gmail.com> Upstream-commit: deeb5c95e2eaa58d4490cb126839b8bc41e5ba08 Component: engine