[Web] allow mbox sso_token login for mailcow and sogo

data/Dockerfiles/dovecot/docker-entrypoint.sh

@@ -315,8 +315,14 @@ remote ${IPV4_NETWORK}.248 {
 }
 EOF
 
-# Create random master Password for SOGo SSO
-RAND_PASS=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1)
+# Set SOGo SSO master Password
+if [ -z "$SOGO_SSO_PASS" ]; then
+  # Set from env var
+  RAND_PASS=$SOGO_SSO_PASS
+else
+  # Create random master Password
+  RAND_PASS=$(cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1)
+fi
 echo -n ${RAND_PASS} > /etc/phpfpm/sogo-sso.pass
 cat <<EOF > /etc/dovecot/sogo-sso.conf
 # Autogenerated by mailcow