example docker compose

.env.example

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+# required, if missing will generate random values
+# encryption key used to store sessions (static random bytes) in base64
+PREAUTH_KEY=''
+# TOTP (RFC 6238) secret/token (static random bytes) in base32
+PREAUTH_TOKEN=''
+
+# optional, change time-to-live, subdomain, default-redirect, text or colors
+# how long a session lasts (in minutes): 43200 is 30 days
+PREAUTH_TTL=43200
+PREAUTH_SUBDOMAIN='preauth'
+PREAUTH_SEND_TO='https://secure.example.com/'
+PREAUTH_BACKGROUND='#029386'
+PREAUTH_FOREGROUND='#ffffff'
+PREAUTH_TITLE='Pre-Authentication System'
+PREAUTH_ID_NAME='Session ID'
+PREAUTH_TOKEN_NAME='Authentication Token'
+PREAUTH_SUBMIT_NAME='Submit'
+
+# who owns the session files
+# permissions of the volumn must match
+USER_ID=1000
+GROUP_ID=1000
+