[Roundcube](https://roundcube.net/) webmail interface with postgres backend and
oauth login.

# Environment Variables

## DOMAINS

Semicolon seperated list of domains to listen to.

## DB_USER

Name of the database user.

## DB_PASSWORD

Password for the database user.

## DB_HOST

Database host.

## DB_NAME

Database name.

## IMAP_HOST

- default: tls://%n

IMAP host to authenticate users against.

## SMTP_HOST

- default: tls://%n

SMTP host for sending mails.

## SMTP_PORT

- default: 587

Port for the SMTP host.

## SECRET_KEY

Secret key for session secrets.

## CIPHER_METHOD

- default: AES-256-CBC

Encryption algorithm for session secrets.

## OAUTH_PROVIDER_NAME

Name of the oauth provider on the roundcube login page.

## OAUTH_CLIENT_ID

Client id for oauth login.

## OAUTH_CLIENT_SECRET

Client secret for oauth login.

## OAUTH_AUTH_URI

Auth uri for oauth login.

Example for keycloak:
`https://example.com/realms/master/protocol/openid-connect/auth`

## OAUTH_TOKEN_URI

Token uri for oauth login.

Example for keycloak:
`https://example.com/realms/master/protocol/openid-connect/token`

## OAUTH_IDENTITY_URI

Userinfo uri for oauth login.

Example for keycloak:
`https://example.com/realms/master/protocol/openid-connect/userinfo`

## MANAGESIEVE_HOST

Where to connect to managesieve.

# Ports

- 80

# Capabilities

- CHOWN
- DAC_OVERRIDE
- NET_BIND_SERVICE
- SETGID
- SETUID