tmux only shared variant (#3)

Reviewed-on: #3
Co-authored-by: Tomas Mirchev <contact@tomastm.com>
Co-committed-by: Tomas Mirchev <contact@tomastm.com>

config/shared/bin/dev

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -euo pipefail
 
 REGISTRY="registry.tomastm.com"
 
@@ -33,7 +33,7 @@ NAME="$1"
 CONTAINER_NAME="${IMAGE##*/}-${NAME}"  # Use only the base image name (without tag)
 
 exec_into_container() {
-    docker exec --detach-keys "ctrl-q,ctrl-p" -it "$CONTAINER_NAME" bash -c "tmux new -A -s $NAME"
+    docker exec --detach-keys "ctrl-q,ctrl-p" -it "$CONTAINER_NAME" bash -c "zsh"
 }
 
 # Check if the container exists
@@ -48,17 +48,15 @@ if [ "$(docker ps -a -q -f "name=$CONTAINER_NAME")" ]; then
 else
     echo "Container $CONTAINER_NAME does not exist. Creating and running it in detached mode..."
     docker run -d \
-        --detach-keys "ctrl-q,ctrl-p" \
         --network host \
         -v "$HOME/.ssh:/home/dev/.ssh" \
         -v "$PWD:/workspace" \
         -v /var/run/docker.sock:/var/run/docker.sock \
-        --group-add $(getent group docker | cut -d: -f3) \
+        --group-add "$(getent group docker | cut -d: -f3)" \
         --name "$CONTAINER_NAME" \
-        --init \
+        --init \ # run tini as PID 1 to handle signals & reap zombies for cleaner container shutdown
         "$FULL_IMAGE_NAME" \
-        sleep infinity
-        # tail -f /dev/null
+        sleep infinity # use if coreutils not available: tail -f /dev/null
 fi
 
 echo "Executing into container $CONTAINER_NAME..."