diff --git a/README.md b/README.md
index e8cc1fa..754ac0a 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,10 @@ module.exports = {
     // Server to run redis on.
     servers: { one: {} },
     // Version of redis. Add '-alpine' to use a much smaller docker image
-    version: '3.2.10-alpine'
+    version: '3.2.10-alpine',
+
+    host: '127.0.0.1', // external redis host (optional) (default: 127.0.0.1) 
+    port: 6379, // external redis port (optional) (default: 6379) 
   }
 }
 ```
diff --git a/assets/redis-start.sh b/assets/redis-start.sh
index bc9ba50..2b13d74 100644
--- a/assets/redis-start.sh
+++ b/assets/redis-start.sh
@@ -2,6 +2,8 @@
 
 REDIS_VERSION=<%= redisVersion %>
 REDIS_DIR=<%= redisDir %>
+REDIS_HOST=<%= redisHost %>
+REDIS_PORT=<%= redisPort %>
 
 set -e
 sudo docker pull redis:$REDIS_VERSION
@@ -18,7 +20,7 @@ echo "Starting redis:$REDIS_VERSION"
 sudo docker run \
   -d \
   --restart=always \
-  --publish=127.0.0.1:6379:6379 \
+  --publish=$REDIS_HOST:$REDIS_PORT:6379 \
   --volume $REDIS_DIR/data:/data \
   --name=redis \
   redis:$REDIS_VERSION \
diff --git a/command-handlers.js b/command-handlers.js
index 2eac578..130ed28 100644
--- a/command-handlers.js
+++ b/command-handlers.js
@@ -29,6 +29,8 @@ module.exports = {
       script: api.resolvePath(__dirname, 'assets/redis-setup.sh'),
       vars: {
         redisVersion: redisConfig.version || '3.2.10-alpine',
+        redisHost: redisConfig.host || '127.0.0.1',
+        redisPort: redisConfig.port || '6379',
         redisDir: '/opt/redis'
       }
     });
@@ -53,6 +55,8 @@ module.exports = {
       script: api.resolvePath(__dirname, 'assets/redis-start.sh'),
       vars: {
         redisVersion: config.version || '3.2.10-alpine',
+        redisHost: config.host || '127.0.0.1',
+        redisPort: config.port || '6379',
         redisDir: '/opt/redis'
       }
     });
diff --git a/validate.js b/validate.js
index 119423c..0386777 100644
--- a/validate.js
+++ b/validate.js
@@ -2,6 +2,8 @@ var joi = require('joi');
 
 var schema = joi.object().keys({
   version: joi.string(),
+  host: joi.string().optional(),
+  port: joi.string().optional(),
   servers: joi.object().keys().required()
 });