feat: add DEVC_COMMAND option

devc.sh

@@ -33,13 +33,13 @@ default_args() {
   [ -e "$SSH_AUTH_SOCK" ] && arg "-v $SSH_AUTH_SOCK:/run/user/1000/ssh-auth-sock"
 
   # Make the user home dir a volume so it survives container
-  # restarts. Use copy to keep the homedir files from the image.
+  # restarts. Use copy to keep the files from the image.
   arg "-v $name:/home/user:copy"
 
   # If there is custom configuration for the container, load
   # it here.
   config_file="$(dirname "$(realpath "$0")")/containers/$name/config.sh"
-  [ -f "${config_file}" ] && source "${config_file}"
+  [ -f "$config_file" ] && source "${config_file}"
 }
 
 # param_args returns the podman run arguments based on the
@@ -56,8 +56,8 @@ param_args() {
       ;;
     -x11) # Enable X11 support.
       arg "-e DISPLAY=$DISPLAY"
-      arg "-v /tmp/.X11-unix:/tmp/.X11-unix"
       arg "-e XAUTHORITY=/run/user/1000/.Xauthority"
+      arg "-v /tmp/.X11-unix:/tmp/.X11-unix"
       arg "-v $XAUTHORITY:/run/user/1000/.Xauthority:ro"
       ;;
     *) # Use unknown arguments a podman arguments.
@@ -68,14 +68,6 @@ param_args() {
 }
 
 ### MAIN ###
-# Get container registry from DEVC_REGISTRY env variable.
-if [ -n "${DEVC_REGISTRY:-}" ]; then
-  registry="$DEVC_REGISTRY"
-else
-  log "registry unknown; set the DEVC_REGISTRY environment variable" 'x' 31
-  exit 1
-fi
-
 # Get the devcontainer name from the first argument. If not
 # provided, use the last used name when possible.
 if [[ $# -gt 0 ]] && [[ ${1:-} != -* ]]; then
@@ -91,12 +83,27 @@ else
 fi
 name="${image%:*}"
 
-# Create a new container when the container is not running or
+# Get container registry from the DEVC_REGISTRY env
-# when any arguments are provided.
+# variable.
+if [ -n "${DEVC_REGISTRY:-}" ]; then
+  registry="$DEVC_REGISTRY"
+else
+  log "registry unknown; set the DEVC_REGISTRY environment variable" 'x' 31
+  exit 1
+fi
+
+# Get container command from the DEVC_COMMAND env variable
+# if set, else use bash -l.
+if [ -z "${DEVC_COMMAND:-}" ]; then
+  DEVC_COMMAND="bash -l"
+fi
+
+# When container is not running or arguments are provided,
+# recreate it.
 if [ "$(podman container inspect "$name" -f {{.State.Running}} 2>&1)" != 'true' ] || [[ $# -gt 0 ]]; then
   log "starting devcontainer..."
   podman container rm -f -t 0 "$name" 1>/dev/null
   podman run -td $(default_args) $(param_args $@) "$registry/$image"
 fi
 
-podman exec -it "$name" bash -l
+podman exec -it "$name" ${DEVC_COMMAND:-}