diff --git a/proto/Dockerfile b/proto/Dockerfile
index 9708141..3406ee0 100755
--- a/proto/Dockerfile
+++ b/proto/Dockerfile
@@ -27,6 +27,9 @@ WORKDIR /app
 
 # Set production environment
 ENV NODE_ENV=production
+# Next standalone otherwise inherits Docker's container-ID HOSTNAME and only binds
+# to the container IP. Bind explicitly to all interfaces for port publishing and healthchecks.
+ENV HOSTNAME=0.0.0.0
 
 # Create non-root user for security
 RUN addgroup --system --gid 1001 nodejs