Merge pull request #323 from nickshears/master

Updated the README to make the APP_KEY instructions clearer

Author: djdefi

README.md

@@ -20,7 +20,6 @@ Cachet is a BSD-3-licensed open source project. If you'd like to support future
 
 2. Edit the docker-compose.yml file to specify your [ENV variables](/conf/.env.docker).
 
-__Note:__ You must specify a unique `APP_KEY` including `base64:` prefix generated by `php artisan key:generate` within the container.
 
 3. To build an image containing a specific Cachet release, set the [`cachet_ver` ARG in the docker-compose.yml](/docker-compose.yml)
 
@@ -37,6 +36,20 @@ __Note:__ You must specify a unique `APP_KEY` including `base64:` prefix generat
 
 5. `cachethq/docker`  runs on port 8000 by default. This is exposed on host port 80 when using docker-compose.
 
+
+6. Setup the APP_KEY
+
+Whilst the container is up and running, find the name of the Cachet container via `docker ps`.
+
+Run `docker exec -i ID_OF_THE_CONTAINER php artisan key:generate`.
+
+Replace `${APP_KEY:-null}` in `docker-compose.yml` with the newly generated Application key.
+
+__Note:__ make sure you include `base64:` prefix. E.g. `base64:YOUR_UNIQUE_KEY`
+
+Restart the Docker containers.
+
+
 # Docker Hub Automated build
 
 `cachethq/docker` is available as a [Docker Hub Trusted Build](https://hub.docker.com/r/cachethq/docker/).