Add config fo read only support

Author: dwt

docker-compose.yml

@@ -10,6 +10,7 @@ services:
     environment:
       - HTTP_PORT=8080
       - READ_ONLY=false
+      # - READ_ONLY=true
     # runzope does not support envsubst directly, so we use bash to execute the command and perform the variable substitution before running zope. This allows us to dynamically configure the HTTP port based on the environment variable.
     # command: bash -c "exec runzope -X debug-mode=on --configure <( envsubst '$\HTTP_PORT' < etc/zope.conf )"
     volumes:

docker/zope/etc/zope.conf

@@ -34,6 +34,7 @@ debug-mode on
        # We can enlarge the cache to reduce network roundtrips, not sure this is neccessary
        # cache-size 200MB
        client-label develop $HTTP_PORT
+       read-only $READ_ONLY
 	</zeoclient>
    mount-point /
 </zodb_db>