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syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
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# docker container update

> Update configuration of Docker containers.
> Note: This command is not supported for Windows containers.
> More information: <https://docs.docker.com/reference/cli/docker/container/update/>.

- Update restart policy to apply when a specific container exits:

`docker {{[update|container update]}} --restart {{always|no|on-failure|unless-stopped}} {{container_name}}`

- Update the policy to restart up to three times a specific container when it exits with non-zero exit status:

`docker {{[update|container update]}} --restart on-failure:3 {{container_name}}`

- Update the number of CPUs available to a specific container:

`docker {{[update|container update]}} --cpus {{count}} {{container_name}}`

- Update the memory limit in [M]egabytes for a specific container:

`docker {{[update|container update]}} {{[-m|--memory]}} {{limit}}M {{container_name}}`

- Update the maximum number of process IDs allowed inside a specific container (use `-1` for unlimited):

`docker {{[update|container update]}} --pids-limit {{count}} {{container_name}}`

- Update the amount of memory in [M]egabytes a specific container can swap to disk (use `-1` for unlimited):

`docker {{[update|container update]}} --memory-swap {{limit}}M {{container_name}}`