docker:tldr:e0abb

The command "docker update --memory ${limit}M ${container_name}" is used to update the memory limit of a Docker container.

Here is the breakdown of the command:

• "docker update": This is the Docker command used to update containers.
• "--memory": This flag specifies that we want to update the memory limit of the container.
• "${limit}M": This is a variable (denoted by ${limit}) that holds the new memory limit value. The "M" at the end indicates that the value is in megabytes (MB). You should replace ${limit} with an actual numerical value.
• "${container_name}": This is another variable (denoted by ${container_name}) that holds the name or ID of the container you want to update. You should replace ${container_name} with the actual name or ID of your container.

For example, let's say you want to update the memory limit of a container with a name "my-container" to 512 megabytes (MB). The command would be:

docker update --memory 512M my-container

Note that the "docker update" command can be used to update various container settings, not just the memory limit.