dc9184a90f
The ANSI escape codes \e[0A (cursor up 0 lines) and \e[0B (cursor down 0 lines) are not well defined and are treated differently by different terminals. In particular xterm treats 0 as a missing parameter and therefore defaults to 1, whereas rxvt-unicode treats these escapes as a request to move 0 lines. However the use of these codes is unnecessary and were really just hiding the fact that we were not correctly computing diff when adding a new line. Having added the new line to the ids map and output the corresponding \n the correct diff would be 1 and not 0 (which xterm interprets as 1) as currently. Rather than changing the hardcoded 0 to a 1 pull the diff calculation out and always do it since it produces the correct answer in both cases. This fixes similar corruption when compose is pulling an image to that seen with `docker pull` and rxvt-unicode (and likely other terminals in that family) seen in docker/docker#28111. This is the same as the fix made to Docker's pkg/jsonmessage in https://github.com/docker/docker/pull/28238 (and I have shamelessly ripped off most of this commit message from there). Signed-off-by: Ian Campbell <ian.campbell@docker.com>
Docker Compose
Compose is a tool for defining and running multi-container Docker applications. With Compose, you use a Compose file to configure your application's services. Then, using a single command, you create and start all the services from your configuration. To learn more about all the features of Compose see the list of features.
Compose is great for development, testing, and staging environments, as well as CI workflows. You can learn more about each case in Common Use Cases.
Using Compose is basically a three-step process.
- Define your app's environment with a
Dockerfileso it can be reproduced anywhere. - Define the services that make up your app in
docker-compose.ymlso they can be run together in an isolated environment: - Lastly, run
docker-compose upand Compose will start and run your entire app.
A docker-compose.yml looks like this:
version: '2'
services:
web:
build: .
ports:
- "5000:5000"
volumes:
- .:/code
redis:
image: redis
For more information about the Compose file, see the Compose file reference
Compose has commands for managing the whole lifecycle of your application:
- Start, stop and rebuild services
- View the status of running services
- Stream the log output of running services
- Run a one-off command on a service
Installation and documentation
- Full documentation is available on Docker's website.
- If you have any questions, you can talk in real-time with other developers in the #docker-compose IRC channel on Freenode. Click here to join using IRCCloud.
- Code repository for Compose is on Github
- If you find any problems please fill out an issue
Contributing
Want to help build Compose? Check out our contributing documentation.
Releasing
Releases are built by maintainers, following an outline of the release process.