docker-machine scpEstimated reading time: 2 minutes
Copy files from your local host to a machine, from machine to machine, or from a
machine to your local host using
The notation is
machinename:/path/to/files for the arguments; in the host
machine’s case, you don’t need to specify the name, just the path.
Consider the following example:
$ cat foo.txt cat: foo.txt: No such file or directory $ docker-machine ssh dev pwd /home/docker $ docker-machine ssh dev 'echo A file created remotely! >foo.txt' $ docker-machine scp dev:/home/docker/foo.txt . foo.txt 100% 28 0.0KB/s 00:00 $ cat foo.txt A file created remotely!
Just like how
scp has a
-r flag for copying files recursively,
docker-machine has a
-r flag for this feature.
In the case of transferring files from machine to machine,
they go through the local host’s filesystem first (using
When transferring large files or updating directories with lots of files,
you can use the
-d flag, which uses
rsync to transfer deltas instead of
transferring all of the files.
When transferring directories and not just files, avoid rsync surprises by using trailing slashes on both the source and destination. For example:
$ mkdir -p bar $ touch bar/baz $ docker-machine scp -r -d bar/ dev:/home/docker/bar/ $ docker-machine ssh dev ls bar baz
Specifying file paths for remote deployments
When you copy files to a remote server with
docker-machine scp for app
deployment, make sure
docker-compose and the Docker daemon know how to find
them. Avoid using relative paths, but specify absolute paths in
Compose files. It’s best to specify absolute
paths both for the location on the Docker daemon and within the container.
For example, imagine you want to transfer your local directory
/Users/<username>/webapp to a remote machine and bind mount it into a
container on the remote host. If the remote user is
ubuntu, use a command like
$ docker-machine scp -r /Users/<username>/webapp MACHINE-NAME:/home/ubuntu/webapp
Then write a docker-compose file that bind mounts it in:
version: "3.1" services: webapp: image: alpine command: cat /app/root.php volumes: - "/home/ubuntu/webapp:/app"
And we can try it out like so:
$ eval $(docker-machine env MACHINE-NAME) $ docker-compose run webapp