Spiffy up containerized dev stack

[avanier]

This PR suggests a few minor changes that should make the containerized dev stack a bit easier to start.

In it's current state the stack will error out on the config.toml file being absent, and that message easily gets buried under the rather verbose logs produced by the frontend stack. Likewise, initializing the database did not reliably work.

[mr-karan]

@avanier Thanks for this.

I always had dev/config.toml in my local clone but looks like the global .gitignore had omitted it, hence the error you faced.

Apart from that, changes LGTM 👍

cc @knadh