Spiffy up the continerized dev README

- Fold lines at 80 chars
- Add more instructions to help bootstrap the stack

dev/README.md

@@ -1,28 +1,44 @@
 # Docker suite for development
 
-**NOTE**: This exists only for local development. If you're interested in using Docker for a production setup, visit the [docs](https://listmonk.app/docs/installation/#docker) instead.
+**NOTE**: This exists only for local development. If you're interested in using
+Docker for a production setup, visit the
+[docs](https://listmonk.app/docs/installation/#docker) instead.
 
 ### Objective
 
-The purpose of this docker suite for local development is to isolate all the dev dependencies in a docker environment. The containers have a host volume mounted inside for the entire app directory. This helps us to not do a full `docker build` for every single local change, only restarting the docker environment is enough.
+The purpose of this Docker suite for local development is to isolate all the dev
+dependencies in a Docker environment. The containers have a host volume mounted
+inside for the entire app directory. This helps us to not do a full
+`docker build` for every single local change, only restarting the Docker
+environment is enough.
 
 ## Setting up a dev suite
 
-To spin up a local suite of
+To spin up a local suite of:
 
 - PostgreSQL
 - Mailhog
 - Node.js frontend app
 - Golang backend app
 
+### Verify your config file
+
+The config file provided at `dev/config.toml` will be used when running the
+containerized development stack. Make sure the values set within are suitable
+for the feature you're trying to develop.
+
 ### Setup DB
 
+Running this will build the appropriate images and initialize the database.
+
 ```bash
 make init-dev-docker
 ```
 
 ### Start frontend and backend apps
 
+Running this start your local development stack.
+
 ```bash
 make dev-docker
 ```
@@ -39,5 +55,8 @@ make rm-dev-docker
 
 ### See local changes in action
 
-- Backend: Anytime you do a change to the Go app, it needs to be compiled. Just run `make dev-docker` again and that should automatically handle it for you.
-- Frontend: Anytime you change the frontend code, you don't need to do anything. Since `yarn` is watching for all the changes and we have mounted the code inside the docker container, `yarn` server automatically restarts.
+- Backend: Anytime you do a change to the Go app, it needs to be compiled. Just
+  run `make dev-docker` again and that should automatically handle it for you.
+- Frontend: Anytime you change the frontend code, you don't need to do anything.
+  Since `yarn` is watching for all the changes and we have mounted the code
+  inside the docker container, `yarn` server automatically restarts.