Merge pull request #4641 from overleaf/jk-sp-external-auth-flag

Server Pro: add EXTERNAL_AUTH variable

GitOrigin-RevId: 2a33fd71bf7ec6e4abe1e48ebd266079a7c82e10

services/web/docker-compose.common.env

@@ -13,6 +13,7 @@ COOKIE_DOMAIN=.overleaf.test
 PUBLIC_URL=http://www.overleaf.test:3000
 HTTP_TEST_HOST=www.overleaf.test
 OT_JWT_AUTH_KEY=very secret key
+EXTERNAL_AUTH=none
 # Server-Pro LDAP
 SHARELATEX_LDAP_URL=ldap://ldap:389
 SHARELATEX_LDAP_SEARCH_BASE=ou=people,dc=planetexpress,dc=com