The Docker CLI
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Sebastiaan van Stijn 9a071a993a
Return zero exit-code when force-removing non-existing containers
When using `docker rm` / `docker container rm` with the `-f` / `--force` option, attempts to remove non-existing containers should print a warning, but should return a zero exit code ("successful").

Currently, a non-zero exit code is returned, marking the removal as "failed";

	$ docker rm -fv 798c9471b695
	Error: No such container: 798c9471b695
	$ echo $?
	1

The command should match the behavior of `rm` / `rm -f`, with the exception that
a warning is printed (instead of silently ignored):

Running `rm` with `-f` silences output and returns a zero exit code:

    touch some-file && rm -f no-such-file some-file; echo exit code: $?; ls -la
    # exit code: 0
    # total 0
    # drwxr-xr-x    2 sebastiaan  staff    64 Aug 14 12:17 .
    # drwxr-xr-x  199 sebastiaan  staff  6368 Aug 14 12:13 ..

    mkdir some-directory && rm -rf no-such-directory some-directory; echo exit code: $?; ls -la
    # exit code: 0
    # total 0
    # drwxr-xr-x    2 sebastiaan  staff    64 Aug 14 12:17 .
    # drwxr-xr-x  199 sebastiaan  staff  6368 Aug 14 12:13 ..

Note that other reasons for a delete to fail should still result in a non-zero
exit code, matching the behavior of `rm`. For instance, in the example below,
the `rm` failed because directories can only be removed if the `-r` option is used;

    touch some-file && mkdir some-directory && rm -f some-directory no-such-file some-file; echo exit code: $?; ls -la
    # rm: some-directory: is a directory
    # exit code: 1
    # total 0
    # drwxr-xr-x    3 sebastiaan  staff    96 Aug 14 14:15 .
    # drwxr-xr-x  199 sebastiaan  staff  6368 Aug 14 12:13 ..
    # drwxr-xr-x    2 sebastiaan  staff    64 Aug 14 14:15 some-directory

This patch updates the `docker rm` / `docker container rm` command to not produce
an error when attempting to remove a missing containers, and instead only print
the error, but return a zero (0) exit code.

With this patch applied:

    docker create --name mycontainer busybox \
    && docker rm nosuchcontainer mycontainer; \
    echo exit code: $?; \
    docker ps -a --filter name=mycontainer
    # df23cc8573f00e97d6e948b48d9ea7d75ce3b4faaab4fe1d3458d3bfa451f39d
    # mycontainer
    # Error: No such container: nosuchcontainer
    # exit code: 0
    # CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2020-08-14 16:17:40 +02:00
.circleci Move circle.yml to .circleci/config.yml 2020-07-15 18:12:37 +02:00
.github Revert "Add CodeQL Analysis workflow" 2020-07-20 10:26:10 +02:00
cli Return zero exit-code when force-removing non-existing containers 2020-08-14 16:17:40 +02:00
cli-plugins Removing CLI plugins API documentation from official documentation as it is now deprecated. 2020-05-19 10:37:35 +02:00
cmd/docker Replace deprecated Cobra command.SetOutput() with command.SetOut() 2020-05-07 14:25:59 +02:00
contrib/completion added 'docker build --taget' to zsh completion 2020-07-20 01:33:02 +02:00
dockerfiles Bump Golang 1.13.14 2020-07-17 15:44:54 +02:00
docs Merge pull request #2526 from thaJeztah/deprecate_old_config 2020-08-05 09:40:45 +02:00
e2e Add script to regenerate test-certificate fixtures 2020-04-10 16:43:06 +02:00
experimental experimental/vlan-networks: markdown touch-ups 2020-04-19 17:53:19 +02:00
internal/test bump gotest.tools v3.0.1 for compatibility with Go 1.14 2020-02-23 00:28:55 +01:00
kubernetes bump gotest.tools v3.0.1 for compatibility with Go 1.14 2020-02-23 00:28:55 +01:00
man deprecate `docker run --kernel-memory` 2020-07-24 20:56:15 +09:00
opts ReadKVEnvStrings/ReadKVStrings return nil if empty, and add tests 2020-06-26 16:07:13 +02:00
scripts scripts/make.ps1: actually define the CommitSuffix parameter 2020-07-10 14:36:22 +02:00
service/logs bump gotest.tools v3.0.1 for compatibility with Go 1.14 2020-02-23 00:28:55 +01:00
templates bump gotest.tools v3.0.1 for compatibility with Go 1.14 2020-02-23 00:28:55 +01:00
vendor Merge pull request #2657 from thaJeztah/bump_continuity 2020-07-30 21:40:25 +02:00
.dockerignore Add checks for dependencies that are not vendored. 2020-07-06 09:23:19 +00:00
.gitignore Add checks for dependencies that are not vendored. 2020-07-06 09:23:19 +00:00
.golangci.yml Remove now obsolete gometalinter and use golangci-lint instead 2019-10-31 19:22:44 +01:00
.mailmap Update authors and mailmap 2020-08-06 01:58:32 +02:00
AUTHORS Update authors and mailmap 2020-08-06 01:58:32 +02:00
CONTRIBUTING.md Fix broken link in CONTRIBUTING 2020-03-19 15:03:59 +01:00
Jenkinsfile Run e2e tests with different engine version on Jenkins 2020-05-20 18:24:10 +02:00
LICENSE Add project files 2017-04-17 17:49:33 -04:00
MAINTAINERS Maintainers: remove Justin and Aaron 2019-12-04 13:08:15 +01:00
Makefile Add checks for dependencies that are not vendored. 2020-07-06 09:23:19 +00:00
NOTICE switch kr/pty to creack/pty v1.1.7 2019-07-29 16:45:41 -07:00
README.md update Jenkins Build Status urls for README 2019-10-24 11:21:12 -04:00
TESTING.md Update TESTING.md to replace testify by gotest.tools 2018-07-02 09:24:28 +02:00
VERSION Bump version to 20.03.0-dev 2020-02-20 00:24:11 +01:00
appveyor.yml Bump Golang 1.13.14 2020-07-17 15:44:54 +02:00
codecov.yml Fix PR comments 2018-01-03 10:23:32 +01:00
docker.Makefile Add a new Makefile variable to override DockerInDocker engine version we use to run e2e tests 2020-05-20 16:10:51 +02:00
poule.yml Add github templates and initial poule configuration 2017-05-09 16:57:46 +02:00
vendor.conf Merge pull request #2657 from thaJeztah/bump_continuity 2020-07-30 21:40:25 +02:00

README.md

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docker/cli

This repository is the home of the cli used in the Docker CE and Docker EE products.

Development

docker/cli is developed using Docker.

Build a linux binary:

$ make -f docker.Makefile binary

Build binaries for all supported platforms:

$ make -f docker.Makefile cross

Run all linting:

$ make -f docker.Makefile lint

List all the available targets:

$ make help

In-container development environment

Start an interactive development environment:

$ make -f docker.Makefile shell

In the development environment you can run many tasks, including build binaries:

$ make binary

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For more information, please see https://www.bis.doc.gov

Licensing

docker/cli is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.