[ WSL2  ]

Suppose that you are working from a stateless docker container in your dev environment (no mounted volumes) and you ended with some changes in files that you don´t want to loose.

One easy way to do that is to use the docker cp utility to get the data out of the container.

## Search for the container

The first thing to do is to get the id of your container

enrique  laptop  ~  $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES f13dafbb392c database_frameworktsqldatabase "/bin/sh -c \"/tmp/da…" 2 hours ago Up 2 hours 0.0.0.0:14330->1433/tcp database_frameworktsqldatabase_1 735742e3ff08 tsqlgenerator:dev "tail -f /dev/null" 2 hours ago Up 2 hours TsqlGenerator enrique  laptop  ~ $

In my case, the container i´m working on right now is the f13dafbb392c

## Copy the file

In my case, I was working from a stateless docker container and during my unit tests i detected some “data” mistakes that I wanted to fix manually (you know…quick fix :). I then ended with a new backup inside a sateless container…so my next thing is to extract that backup out of my container as soon as possible.

To copy the file, you only need to know:

• ContainerId
• full path to file
• where you want to extract that file
docker cp $ContainerId:$fullPathToFile \$outputDirectory

### Copy command

In our case scenario, the operation will be: