Docker containers should stop logging to stdout/stderr

[jdenoc]

So that we can more easily see logs in a production setting, docker containers should stop logging to stdout/stderr.

[jdenoc]

Some examples in app.dockerfile

• https://github.com/jdenoc/money-tracker/blob/883c04c59f6989dcce0df93944720166b74da4e5/.docker/app.dockerfile#L3
• https://github.com/jdenoc/money-tracker/blob/883c04c59f6989dcce0df93944720166b74da4e5/.docker/app.dockerfile#L19
• https://github.com/jdenoc/money-tracker/blob/883c04c59f6989dcce0df93944720166b74da4e5/.docker/app.dockerfile#L21
• https://github.com/jdenoc/money-tracker/blob/883c04c59f6989dcce0df93944720166b74da4e5/.docker/app.dockerfile#L4
• https://github.com/jdenoc/money-tracker/blob/883c04c59f6989dcce0df93944720166b74da4e5/.docker/app.dockerfile#L20