roundcube/README.md

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[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