[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`


# Ports
- 80

# Capabilities
- CHOWN
- DAC_OVERRIDE
- NET_BIND_SERVICE
- SETGID
- SETUID