diff --git a/docker-compose.yml b/docker-compose.yml
index f733e2a4..ce8d7d12 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -59,7 +59,7 @@ services:
         ports:
             # ---- Format: ----
             # [HOST-ADDR : ] HOST-PORT : DOCKER-PORT
-            - "127.0.0.1:80:80"
+            - "${LOCAL_LISTEN_ADDR}80:80"
 
         networks:
             app_net:
@@ -231,7 +231,7 @@ services:
 
         ports:
             # [local-machine:]local-port:docker-port
-            - "127.0.0.1:3306:3306"
+            - "${LOCAL_LISTEN_ADDR}3306:3306"
 
         networks:
               app_net:
@@ -274,7 +274,7 @@ services:
 
         ports:
             # [local-machine:]local-port:docker-port
-            - "127.0.0.1:5432:5432"
+            - "${LOCAL_LISTEN_ADDR}5432:5432"
 
         networks:
               app_net:
diff --git a/env-example b/env-example
index 51b39bdd..5364d7eb 100644
--- a/env-example
+++ b/env-example
@@ -18,6 +18,21 @@
 DEBUG_COMPOSE_ENTRYPOINT=0
 
 
+###
+### At what IP address should the docker services listen
+### on the Host computer?
+###
+### The specified default should be fine for Linux and OSX (127.0.0.1:).
+### If you are on windows, you will probably have to change
+### it to the IP address of the docker machine.
+###
+### a.) Leave blank, to listen on all interfaces (no trailing color ':')
+###    LOCAL_LISTEN_ADDR=
+### b.) If an IP is specified, note the trailing colon ':'
+###    LOCAL_LISTEN_ADDR=127.0.0.1:
+###
+LOCAL_LISTEN_ADDR=127.0.0.1:
+
 
 ################################################################################
 ###