diff --git a/packages/docker/src/commands.js b/packages/docker/src/commands.js
index 518b7bb..32dea55 100644
--- a/packages/docker/src/commands.js
+++ b/packages/docker/src/commands.js
@@ -55,7 +55,7 @@ export default (program, flecks) => {
             .map(async ([fleck, config]) => {
               Object.entries(await config)
                 .forEach(([key, config]) => {
-                  services[key] = {image: config.image, environment: {}};
+                  services[key] = {image: config.image, environment: {}, ...config.extra};
                 });
               return [
                 `FLECKS_ENV_${flecks.constructor.environmentalize(fleck)}`,
diff --git a/packages/redis/src/containers.js b/packages/redis/src/containers.js
index a6c4ce1..9989af9 100644
--- a/packages/redis/src/containers.js
+++ b/packages/redis/src/containers.js
@@ -5,6 +5,9 @@ export default (flecks) => ({
         host: 'redis',
       },
     },
+    extra: {
+      command: `--port ${flecks.get('@flecks/redis/server.port')}`,
+    },
     image: 'redis:6',
     mount: '/data',
     ports: {[flecks.get('@flecks/redis/server.port')]: 6379},