44 lines
1.7 KiB
Markdown
44 lines
1.7 KiB
Markdown
---
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title: 'Custom User Changes & Patches | Scripting'
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---
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If you'd like to change, patch or alter files or behavior of `docker-mailserver`, you can use a script.
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In case you cloned this repository, you can copy the file [`user-patches.sh.dist` (_under `config/`_)][gh-file-userpatches] with `#!sh cp config/user-patches.sh.dist docker-data/dms/config/user-patches.sh` in order to create the `user-patches.sh` script.
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If you are managing your directory structure yourself, create a `docker-data/dms/config/` directory and add the `user-patches.sh` file yourself.
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``` sh
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# 1. Either create the docker-data/dms/config/ directory yourself
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# or let docker-mailserver create it on initial startup
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/tmp $ mkdir -p docker-data/dms/config/ && cd docker-data/dms/config/
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# 2. Create the user-patches.sh file and edit it
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/tmp/docker-data/dms/config $ touch user-patches.sh
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/tmp/docker-data/dms/config $ nano user-patches.sh
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```
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The contents could look like this:
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``` sh
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#!/bin/bash
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cat >/etc/amavis/conf.d/50-user << "END"
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use strict;
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$undecipherable_subject_tag = undef;
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$admin_maps_by_ccat{+CC_UNCHECKED} = undef;
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#------------ Do not modify anything below this line -------------
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1; # ensure a defined return
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END
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```
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And you're done. The user patches script runs right before starting daemons. That means, all the other configuration is in place, so the script can make final adjustments.
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!!! note
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Many "patches" can already be done with the Docker Compose-/Stack-file. Adding hostnames to `/etc/hosts` is done with the `#!yaml extra_hosts:` section, `sysctl` commands can be managed with the `#!yaml sysctls:` section, etc.
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[gh-file-userpatches]: https://github.com/docker-mailserver/docker-mailserver/blob/master/config-examples/user-patches.sh
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