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dockerdockerfilemount
Suneet Jain
Suneet Jain

Reputation: 256

Dockerfile - How to define mounting of host file system to the container

I want to mount a folder of the host system to the container and it need to be defined in the Dockerfile so that user doesn't need to do it manually by passing the argument in the command line to run the container. How to achieve this ?

Upvotes: 1

Views: 1943

Answers (2)

Hemerson Varela
Hemerson Varela

Reputation: 25772

Dockerfile is for create images not containers.

You can not define a volume on a image. The volume must be defined on execution time when the container is created. 

docker run -v /host-folder:/root/containerfolder -i -t  imagename

Upvotes: 0

yamenk
yamenk

Reputation: 51738

This simply cannot be done. Docker images are designed to be portable. Host mounts are host specific. Thus if you are able to specify a host mount at build time, it will make the image non-portable across machine that don't have this mount folder. Thus this is why this option is not available.

You can use docker compose to help the user not choose the mount folder. Take a look at How do I mount a host directory as a volume in docker compose

Upvotes: 3

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