refactor: replace custom CRM with Monica fork

docs/contribute/docker.md

@@ -0,0 +1,55 @@
+# Build Docker image for Monica
+
+If you want to build your own docker image for Monica, follow these steps:
+
+## Use docker-compose to build and run your own image
+
+Use this process if you want to modify Monica source code and build
+your image to run.
+
+Edit `.env` to set `DB_HOST=mysql` (as `mysql` is the creative name of the MySQL container).
+
+Then run:
+
+```sh
+docker-compose -f docker-compose.dev.yml build
+docker-compose -f docker-compose.dev.yml up
+```
+
+## Use Docker directly to run with your own database
+
+Use this process if you're a developer and want complete control over
+your Monica container.
+
+If you aren't using docker-compose, edit `.env` again to set the `DB_*` variables to match your database. Then run:
+
+```sh
+scripts/docker/build.sh
+```
+
+You can add the tag name as a parameter:
+```sh
+scripts/docker/build.sh monica-dev
+```
+
+Run monica with:
+```sh
+docker run --env-file .env -p 80:80 monica-dev
+```
+
+Or run a command in the container:
+```sh
+docker run --env-file .env -it monica-dev bash
+```
+
+There's a bunch of [docker-compose examples here.](https://github.com/monicahq/docker/tree/master/.examples)
+
+Note that uploaded files, like avatars, will disappear when you
+restart the container. Map a volume to
+`/var/www/monica/storage/app/public` if you want that data to persist
+between runs. See `docker-compose.yml` for examples.
+
+## Other documents to read
+
+[Connecting to MySQL inside of a Docker container](/docs/installation/docker-mysql.md)
+[Use mobile app with standalone server](/docs/installation/mobile.md)