cleanup

Dockerfile

@@ -1,7 +1,7 @@
 FROM ripl/libbot2:latest
 
 # set Ubuntu codename
-ENV UBUNTU_DISTRIB_CODENAME "xenial"
+# ENV UBUNTU_DISTRIB_CODENAME "focal"
 
 # set ROS codename
 #ENV ROS_DISTRO "kinetic"
@@ -10,9 +10,6 @@ ENV ROS_DISTRO "noetic"
 # set default ROS master hostname
 ENV ROS_MASTER_HOST "localhost"
 
-# Setup ROS sources
-#RUN sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $UBUNTU_DISTRIB_CODENAME main" > /etc/apt/sources.list.d/ros-latest.list'
-
 RUN apt update && apt install -y curl
 
 RUN sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
@@ -27,15 +24,6 @@ RUN apt update && apt install -y \
     # clean the apt cache
     && rm -rf /var/lib/apt/lists/*
 
-# Setup ROS keys
-#RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
-
-# update apt lists and install system libraries, then clean the apt cache
-#RUN apt update && apt install -y \
-#    ros-$ROS_DISTRO-desktop \
-    # clean the apt cache
-#    && rm -rf /var/lib/apt/lists/*
-
 # source ROS
 RUN echo "source /opt/ros/${ROS_DISTRO}/setup.bash" >> /etc/bash.bashrc