You can use `-v` to bind mount `conf`, `storage` and `plugins` to the hosts filesystem (example below).
Note that if you do mount conf like this, that you will first need to supply a copy of config.yaml in that directory; the Docker container will not start properly if this file is missing. You can copy this file initially from https://github.com/verdaccio/verdaccio/blob/5.x/conf/docker.yaml. However, note the security warnings in that file; you will definitely want to lock it down in production.
> Note: Verdaccio runs as a non-root user (uid=10001) inside the container, if you use bind mount to override default,
> you need to make sure the mount directory is assigned to the right user. In above example, you need to run `sudo chown -R 10001:65533 /path/for/verdaccio` otherwise
> you will get permission errors at runtime.
> [Use docker volume](https://docs.docker.com/storage/volumes/) is recommended over using bind mount.
If SELinux is enforced in your system, the directories to be bind-mounted in the container need to be relabeled. Otherwise verdaccio will be forbidden from reading those files.
```
fatal--- cannot open config file /verdaccio/conf/config.yaml: Error: CONFIG: it does not look like a valid config file
```
If verdaccio can't read files on a bind-mounted directory and you are unsure, please check `/var/log/audit/audit.log` to confirm that it's a SELinux issue. In this example, the error above produced the following AVC denial.
`chcon` can change the labels of shared files and directories. To make a directory accessible to containers, change the directory type to `container_file_t`.
```sh
$ chcon -Rt container_file_t ./conf
```
If you want to make the directory accessible only to a specific container, use `chcat` to specify a matching SELinux category.
An alternative solution is to use [z and Z flags](https://docs.docker.com/storage/bind-mounts/#configure-the-selinux-label). To add the `z` flag to the mountpoint `./conf:/verdaccio/conf` simply change it to `./conf:/verdaccio/conf:z`. The `z` flag relabels the directory and makes it accessible by every container while the `Z` flags relables the directory and makes it accessible only to that specific container. However using these flags is dangerous. A small configuration mistake, like mounting `/home/user` or `/var` can mess up the labels on those directories and make the system unbootable.
Plugins can be installed in a separate directory and mounted using Docker or Kubernetes, however make sure you build plugins with native dependencies using the same base image as the Verdaccio Dockerfile.
For more information check real plugin examples with Docker in our [source code](https://github.com/verdaccio/verdaccio/tree/master/docker-examples/v5/plugins).
You can configure the protocol verdaccio is going to listen on, similarly to the port configuration.
You have to overwrite the default value("http") of the `PROTOCOL` environment variable to "https", after you specified the certificates in the config.yaml.
Docker will generate a named volume in which to store persistent application data. You can use `docker inspect` or `docker volume inspect` to reveal the physical location of the volume and edit the configuration, such as:
There is also an npm script for building the docker image, so you can also do:
```bash
yarn run build:docker
```
Note: The first build takes some minutes to build because it needs to run `npm install`,
and it will take that long again whenever you change any file that is not listed in `.dockerignore`.
Please note that for any of the above docker commands you need to have docker installed on your machine and the docker executable should be available on your `$PATH`.
