Install ros_gz from package, not from source, remove sim.repos

Author: amarburg

.docker/Dockerfile

@@ -130,6 +130,15 @@ RUN wget https://packages.osrfoundation.org/gazebo.gpg -O /usr/share/keyrings/pk
     && apt-get -q update \
     && apt-get -y --quiet --no-install-recommends install \
     gz-${GZ_VERSION} \
+    ros-${ROS_DISTRO}-ros-gz${GZ_VERSION} \
+    && apt-get autoremove -y \
+    && apt-get clean -y \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install ArduPilot and ardupilot_gazebo dependencies
+RUN apt-get -q update \
+    && apt-get -q -y upgrade \
+    && apt-get -q install --no-install-recommends -y \
     python3-pexpect \
     python3-wxgtk4.0 \
     python3-future \
@@ -178,7 +187,6 @@ RUN [ "/bin/bash" , "-c" , " \
 WORKDIR $USER_WORKSPACE
 RUN sudo apt-get -q update \
     && sudo apt-get -q -y upgrade \
-    && vcs import src < src/blue/sim.repos \
     && rosdep update \
     && rosdep install -y --from-paths src --ignore-src --rosdistro ${ROS_DISTRO} --skip-keys="gz-transport12 gz-sim7 gz-math7 gz-msgs9 gz-plugin2" \
     && sudo apt-get autoremove -y \