change the order of the layers to cache stonefish library first.

Author: Cruiz102

Dockerfile

@@ -39,27 +39,28 @@ ENV PATH="/root/.cargo/bin:${PATH}"
 
 # Create workspace
 WORKDIR /ros2_ws
+COPY vendor/stonefish ./vendor/stonefish
+# Build Stonefish library
+WORKDIR /ros2_ws/vendor/stonefish
+RUN mkdir -p build && cd build && \
+    cmake .. && \
+    make -j$(nproc) && \
+    make install && \
+    ldconfig
+
+
 COPY src/interfaces ./src/interfaces
 COPY src/bringup ./src/bringup
 COPY src/controller_stonefish ./src/controller_stonefish
 COPY src/mission_executor ./src/mission_executor
 COPY vendor/stonefish_ros2 ./src/stonefish_ros2
-COPY vendor/stonefish ./vendor/stonefish
 
 RUN rosdep init || true && \
     rosdep update
 
 RUN bash -c "source /opt/ros/jazzy/setup.bash && \
     rosdep install --from-paths src --ignore-src -r -y || true"
 
-# Build Stonefish library
-WORKDIR /ros2_ws/vendor/stonefish
-RUN mkdir -p build && cd build && \
-    cmake .. && \
-    make -j$(nproc) && \
-    make install && \
-    ldconfig
-
 # Build ROS 2 workspace
 WORKDIR /ros2_ws
 RUN bash -c "source /opt/ros/jazzy/setup.bash && \