Copy a file from your container to the host operating system
It is possible to copy files from your Docker container onto your host operating system, this is quite useful for cpanfile.snapshot files etc. generated inside the container.
$ docker cp <containerId>:/file/path/within/container /host/path/target
Example:
$ docker cp myapp:/usr/src/app/cpanfile.snapshot ./cpanfile.snapshot
Alternatively you can use the name, both can be optained using docker ps or something like ctop:
$ docker ps --format ""
The other way around:
$ docker cp /host/path/target <containerId>:/file/path/within/container
Example:
$ docker cp myapp.conf myapp:/usr/src/app/myapp.conf
You can get the name of the container