diff --git a/Dockerfile b/Dockerfile
index 2f7e385..c76741d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,6 +24,7 @@ WORKDIR /app
 
 ENV NODE_ENV=production
 ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
 
 # Don't run as root
 RUN addgroup --system --gid 1001 nodejs && \