docker,

Map a single file into a Docker container

May 03, 2023 · 1 min read · Post a comment

Whenever you try to map a single file into a container you might get a directory instead. Generally, this happens because of a host path being probably not valid or absolute. So, here’s the catch.

Prerequisites

  • Docker

Solution

Example mapping a Nginx config under /etc/nginx/conf.d/ directory in a Docker Nginx container:

docker run -d -p 80:80 ${PWD}/nginx/devcoops.com.conf:/etc/nginx/conf.d/devcoops.com.conf --name nginx nginx

or:

docker run -d -p 80:80 /Users/devcoops/repos/devcoops.com/nginx/devcoops.com.conf:/etc/nginx/conf.d/devcoops.com.conf --name nginx nginx

A Docker Compose example:

...
volumes:
  - ${PWD}/nginx/devcoops.com.conf:/etc/nginx/conf.d/devcoops.com.conf

or even:

...
volumes:
  - /Users/devcoops/repos/devcoops.com/nginx/devcoops.com.conf:/etc/nginx/conf.d/devcoops.com.conf

Conclusion

In case you face any issues, feel free to leave a comment below and if you find this tutorial useful, follow our official channel on Telegram.

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