diff --git a/docker/test.Dockerfile b/docker/test.Dockerfile
index 1bec4da..af7fd3c 100644
--- a/docker/test.Dockerfile
+++ b/docker/test.Dockerfile
@@ -1,24 +1,25 @@
 FROM node:18-bullseye-slim
 
 ENV HOME=/opt/sealious-app
 
 # Tini will ensure that any orphaned processes get reaped properly.
 ENV TINI_VERSION v0.19.0
 ADD https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini /tini
 
 RUN apt update
 RUN apt install -y git
+RUN apt install -y tmux
 
 RUN chmod +x /tini
 ENTRYPOINT ["/tini", "--"]
 
 VOLUME $HOME
 WORKDIR $HOME
 
 RUN npm install -g npm@latest
 
 USER $UID:$GID
 
 EXPOSE 8080
 
 CMD ["/usr/local/bin/node", "."]