Docker: added noetic image. Updated travis for focal.

.travis.yml

@@ -102,6 +102,37 @@ matrix:
         - source devel/setup.bash
         - catkin_make
         - catkin_make install
+        
+    - dist: focal
+      install:
+        - sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu focal main" > /etc/apt/sources.list.d/ros-latest.list'
+        - wget http://packages.ros.org/ros.key -O - | sudo apt-key add -
+        - sudo apt-get update
+        - sudo apt-get install dpkg
+        - sudo apt-get -y install ros-noetic-rtabmap-ros
+        - sudo apt-get -y remove ros-noetic-rtabmap
+
+      script: 
+        - source /opt/ros/noetic/setup.bash
+        - cd ..
+        - mkdir -p catkin_ws/src
+        - cd catkin_ws/src
+        - catkin_init_workspace
+        - cd ..
+        - catkin_make
+        - cd ..
+        - mv rtabmap_ros catkin_ws/src/.
+        - git clone https://github.com/introlab/rtabmap.git
+        - cd rtabmap
+        - if [ "$TRAVIS_BRANCH" = "devel" ]; then git checkout devel; fi
+        - mkdir -p build && cd build
+        - cmake -DCMAKE_INSTALL_PREFIX=~/build/introlab/catkin_ws/devel .. 
+        - make
+        - make install
+        - cd ../../catkin_ws
+        - source devel/setup.bash
+        - catkin_make
+        - catkin_make install
 
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