Change adze to jingle

[gcampo88]

Addresses #33. Also a good opportunity to do a high-level review of general API design and schema.

[gcampo88]

Huh... everything is working for me fine locally through docker, though I can see that it's not working in Codebuild. Which commands send you into a Waiting for postgres loop? Going to add LOCAL_ENV -> true in docker-compose.yml, possible it wasn't getting that value correctly before...

[cavis]

Okay, so summary of changes this may or may not need to work in CodeBuild / ECS ...

• [x] Add POSTGRES_USER and POSTGRES_PASSWORD to the env-example
• [x] Add RELX_REPLACE_OS_VARS to the dockerfile
• [x] Add the || "${ENV_VAR_NAME}"s to the config.exs
• [x] Find/replace "porter" -> "jingle" (must be leftover in castle as well)
• [x] Don't actually need docker-compose start db step in the README (i think it just auto-starts the db)
• [x] For ID_HOST to work, you need to define a config :jingle, :env_config, ... in your config.exs, as Env.get tries to pull from that
• [x] Instead of using an .env, your docker-compose-ci.yml should just define all the ENVs inline (see feeder + castle for example) ... or just use the env-example

[cavis]

:+yay: that'll do, PR. that'll do.