Migrate to using rostooling/setup-ros-docker images (#68)

* use rostooling/setup-ros-docker images instead of OSRF's ROS docker images

* be the user appropriate for the updated docker image/container

* assume default user is rosbuild, not root

ce_build.sh

@@ -26,10 +26,13 @@ then
   fi
 fi
 
+[ ${ROS_DISTRO} == "kinetic" ] && UBUNTU_DISTRO=xenial || UBUNTU_DISTRO=bionic
+DOCKER_IMAGE_NAME="rostooling/setup-ros-docker:ubuntu-${UBUNTU_DISTRO}-ros-${ROS_DISTRO}-ros-base-latest"
+
 echo "using Build script, ${BUILD_SCRIPT_NAME}"
 DOCKER_BUILD_SCRIPT="/shared/$(basename -- ${SCRIPT_DIR})/${BUILD_SCRIPT_NAME}"
 # get a docker container from OSRF's docker hub
-docker pull "ros:${ROS_DISTRO}-ros-core"
+docker pull "${DOCKER_IMAGE_NAME}"
 # run docker container
 docker run -v "${PWD}/shared:/shared" \
   -e ROS_DISTRO="${ROS_DISTRO}" \
@@ -46,21 +49,15 @@ docker run -v "${PWD}/shared:/shared" \
   -e UPLOAD_SOURCES="${UPLOAD_SOURCES}" \
   --name "${ROS_DISTRO}-container" \
   --network=host \
-  -dit "ros:${ROS_DISTRO}-ros-core" /bin/bash
+  -dit "${DOCKER_IMAGE_NAME}" /bin/bash
 
-# add the rosdev non-root user
-docker exec "${ROS_DISTRO}-container" /bin/bash -c 'groupadd -g 999 rosdev && useradd -m -u 999 -g rosdev -G sudo rosdev'
-# set the rosdev user password to rosdev
-docker exec "${ROS_DISTRO}-container" /bin/bash -c 'echo "rosdev:rosdev" | chpasswd'
-# allow rosdev to use sudo without password
-docker exec "${ROS_DISTRO}-container" /bin/bash -c 'echo "rosdev ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers'
 # make a workspace in the docker container
-docker exec --user rosdev "${ROS_DISTRO}-container" /bin/bash -c 'sudo mkdir -p "/${ROS_DISTRO}_ws/src"'
+docker exec "${ROS_DISTRO}-container" /bin/bash -c 'sudo mkdir -p "/${ROS_DISTRO}_ws/src"'
 # copy the code over to the docker container
 docker cp "${TRAVIS_BUILD_DIR}" "${ROS_DISTRO}-container":"/${ROS_DISTRO}_ws/src/"
-docker exec --user rosdev "${ROS_DISTRO}-container" /bin/bash -c 'sudo chown -R rosdev "/${ROS_DISTRO}_ws"'
+docker exec "${ROS_DISTRO}-container" /bin/bash -c 'sudo chown -R rosbuild "/${ROS_DISTRO}_ws"'
 # execute build scripts and run test
-docker exec --user rosdev "${ROS_DISTRO}"-container /bin/bash "${DOCKER_BUILD_SCRIPT}"
+docker exec "${ROS_DISTRO}"-container /bin/bash "${DOCKER_BUILD_SCRIPT}"
 
 # upload coverage report to codecov
 if [ -z "${NO_TEST}" ];