Fix solve warn about json args

dockerfiles/devenv.Dockerfile

@@ -125,7 +125,7 @@ ENV RUNNING_IN_DOCKER=true
 
 # Define entrypoint and command
 ENTRYPOINT ["/ros_entrypoint.sh"]
-CMD $EXT_SHELL
+CMD ["$EXT_SHELL"]
 
 # Switch back to dialog for any ad-hoc use of apt-get
 ENV DEBIAN_FRONTEND=
@@ -206,7 +206,7 @@ RUN if [ "$CONAN" = "install" ]; \
 RUN rm -rf *
 
 # Update this date to re-run the image final update
-LABEL image.date=19-12-2024
+LABEL image.date=09-01-2025
 
 # Update final image
 RUN apt-get update \
@@ -219,4 +219,4 @@ ENV DEBIAN_FRONTEND=
 
 # Define entrypoint and command
 ENTRYPOINT ["/ros_entrypoint.sh"]
-CMD $EXT_SHELL
+CMD ["$EXT_SHELL"]