diff --git a/base/Dockerfile b/base/Dockerfile
index 3313ceb..814fcd2 100644
--- a/base/Dockerfile
+++ b/base/Dockerfile
@@ -7,7 +7,7 @@ RUN apk add --no-cache \
     openssl-dev \
     pkgconf \
     build-base \
-    ca-certificates
+    ca-certificates \
 
 RUN mkdir /app
 WORKDIR /app
diff --git a/lab/Dockerfile b/lab/Dockerfile
index af8cc64..eedc6aa 100644
--- a/lab/Dockerfile
+++ b/lab/Dockerfile
@@ -2,12 +2,12 @@ FROM git.luke-else.co.uk/luke-else/base:latest
 
 # Install core utilities and development tools
 RUN apk add --no-cache \
+    bash \
     curl \
     git \
     jq \
     openssh \
     openssh-client \
-    tmux \
     sudo \
     ca-certificates \
     busybox-extras \
@@ -32,4 +32,4 @@ WORKDIR /home/dev
 
 RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.1/zsh-in-docker.sh)"
 
-CMD [ "tmux" ]
\ No newline at end of file
+CMD [ "/bin/zsh" ]
\ No newline at end of file
diff --git a/tf-dev/Dockerfile b/tf-dev/Dockerfile
index 336df0c..95b7981 100644
--- a/tf-dev/Dockerfile
+++ b/tf-dev/Dockerfile
@@ -12,4 +12,4 @@ RUN sudo ./install-opentofu.sh --install-method apk
 # Remove the installer:
 RUN rm -f install-opentofu.sh
 
-CMD [ "tmux" ]
+CMD [ "/bin/zsh" ]