Change env-example varnish backend host to 'workspace'

Author: zeroc0d3

env-example

@@ -130,12 +130,12 @@ VARNISHD_PARAMS=-p default_ttl=3600 -p default_grace=3600
 
 ### Varnish Proxy 1 Container
 VARNISH_PROXY1_CACHE_SIZE=128m
-VARNISH_PROXY1_BACKEND_HOST=server1
+VARNISH_PROXY1_BACKEND_HOST=workspace
 VARNISH_PROXY1_SERVER=SERVER1
 
 ### Varnish Proxy 2 Container
 VARNISH_PROXY2_CACHE_SIZE=128m
-VARNISH_PROXY2_BACKEND_HOST=server2
+VARNISH_PROXY2_BACKEND_HOST=workspace
 VARNISH_PROXY2_SERVER=SERVER2
 
 ### HAPROXY Container