Update Dockerfile: Add umask, fix home dir

Dockerfile

-FROM fbottarel/ros-desktop-full-vnc:melodic
+FROM dorowu/ubuntu-desktop-lxde-vnc:bionic
 
-RUN apt-get update && apt-get dist-upgrade -y
+# Fix dirmngr
+RUN apt-get purge dirmngr -y && apt-get update && apt-get install dirmngr -y
+RUN apt-get dist-upgrade -y
+
+# Adding keys for ROS
+RUN sh -c 'echo "deb http://packages.ros.org/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'
+RUN apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654
+
+# Installing ROS
+RUN apt-get update && apt-get install -y ros-melodic-desktop-full wget nano python-rosdep
 RUN apt-get install -y \
       ros-melodic-libfranka python-catkin-tools libeigen3-dev 
-COPY ./vnc/simple_simulation.sh /root/Desktop/
-RUN ln -s /usr/share/applications/lxterminal.desktop /root/Desktop/lxterminal.desktop
-RUN chmod a+x /root/Desktop/simple_simulation.sh && mkdir /root/ws_tmp
+RUN apt-get install -y python-rosinstall python-rosinstall-generator python-wstool build-essential
+RUN rosdep init && rosdep update
+
+RUN mkdir -p /root/ws_tmp /root/Desktop && ln -s /usr/share/applications/lxterminal.desktop /root/Desktop/lxterminal.desktop
 ENV ROS_DISTRO=melodic
+
+RUN /bin/bash -c "echo -e 'source /root/Desktop/ros_ws/devel/setup.bash\n \
+      umask 000\n \
+      cd /root/Desktop/ros_ws/\n' >> /root/.bashrc "
+
 WORKDIR /root/ws_tmp
 COPY vnc/copyws.sh /root/copyws.sh
 RUN chmod a+x /root/copyws.sh
 COPY ./src /root/ws_tmp/src
-RUN apt-get update && rosdep install --from-paths . -r -y && apt-get clean
+
+RUN apt-get update && rosdep install --from-paths . -r -y
+
 RUN catkin config \
       --extend /opt/ros/melodic && \
     catkin build

vnc/simple_simulation.sh

-#!/bin/bash
-
-source /root/Desktop/ros_ws/devel/setup.bash
-lxterminal --command "roslaunch sample_applications simple_simulation.launch"
\ No newline at end of file