antondlr

As discussed internally; our [published pgp identity](https://keybase.io/sigp/pgp_keys.asc?fingerprint=15e66d941f697e28f49381f426416dc3f30674b0) ``` pub rsa4096 2020-11-27 [SC] [expires: 2036-11-23] 15E66D941F697E28F49381F426416DC3F30674B0 uid [ unknown] Sigma Prime sig 3 26416DC3F30674B0 2020-11-27 Sigma Prime sub rsa4096 2020-11-27 [E]...

- [x] provide default .env file if none provided - [x] clean up logging from the container - [x] better error handling on startup (i.e., APIs unavailable) - [ ]...

This should fix https://github.com/sigp/siren/issues/374 just to make sure @rickimoore after cutting a release, no manual actions on docker hub are done anymore right?