feat: document docker-compose deployment using dotenv file

content/docs/self-hosting/docker.md

@@ -33,7 +33,7 @@ for configurable options.
 
 If you have already have a Postgres instance running, then:
 
-```bash
+```
 docker run -p <host-machine-port>:<port-in-configuration-file> \
 	--add-host=database:<database-ip-addrss> \
 	-e RUST_LOG=debug \
@@ -42,18 +42,26 @@ docker run -p <host-machine-port>:<port-in-configuration-file> \
 ```
 
 If you don't have a Postgres instance running, you can either install
-one using a package manager or launch one with docker. A [docker-compose
+one using a package manager or launch one with docker.
-configuration]('../docker-compose.yml) is available that will launch both
-a database instance mcaptcha instance.
 
 ## With docker-compose
 
-1. Follow steps above to build docker image.
+1. Download docker-compose file and the configuration file:
 
-2. Set database password [docker-compose configuration]('../docker-compose.yml).
+```
+wget https://raw.githubusercontent.com/mCaptcha/mCaptcha/master/.env.docker-compose
+wget https://raw.githubusercontent.com/mCaptcha/mCaptcha/master/docker-compose.yml
+```
 
-3. Launch network
+2. Configure deployment using `.env.docker-compose` environment variable
+   file
 
-```bash
+3. Launch containers:
+
+```
 docker-compose up -d
 ```
+
+4. Configure SSL using reverse proxy: mCaptcha doesn't support SSL at
+   the moment, so please use a reverse proxy to secure your instance. A
+   reference nginx virtual host configuration file is available [here](../bare-metal/#6-install-and-configure-nginx).