updated to use noetic since base image is based on Ubuntu 20.04

Dockerfile

@@ -4,23 +4,36 @@ FROM ripl/libbot2:latest
 ENV UBUNTU_DISTRIB_CODENAME "xenial"
 
 # set ROS codename
-ENV ROS_DISTRO "kinetic"
+#ENV ROS_DISTRO "kinetic"
+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 sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $UBUNTU_DISTRIB_CODENAME main" > /etc/apt/sources.list.d/ros-latest.list'
 
-# Setup ROS keys
-RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
+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'
+
+RUN curl -s https://raw.githubusercontent.com/ros/rosdistro/master/ros.asc | apt-key add -
 
 # 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/*
 
+# 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