docker: select if jsk-pcl-ros is installed (to reduce size in ci)

Dockerfile

@@ -1,3 +1,4 @@
+ARG INSTALL_JSK_PCL=true
 FROM nvidia/cuda:11.2.2-devel-ubuntu20.04
 ENV DEBIAN_FRONTEND=noninteractive
 RUN rm /etc/apt/sources.list.d/cuda.list
@@ -64,8 +65,10 @@ RUN apt update && apt install python3-osrf-pycommon python3-catkin-tools python3
 RUN apt update && apt install ros-noetic-jsk-tools -y
 RUN apt update && apt install ros-noetic-image-transport-plugins -y
 
-# install launch/sample_detection.launch dependencies
-RUN apt update && apt install ros-noetic-jsk-pcl-ros ros-noetic-jsk-pcl-ros-utils -y
+# install launch/sample_detection.launch dependencies if you work with point clouds
+RUN if [ "$INSTALL_ROS_JSK" = "true" ]; then \
+    RUN apt update && apt install ros-noetic-jsk-pcl-ros ros-noetic-jsk-pcl-ros-utils -y
+fi
 
 WORKDIR /home/user