fix version setup

Dockerfile

@@ -54,5 +54,5 @@ RUN apt-get update && apt-get install -y \
         python3-rosdep && \
 	rm -rf /var/lib/apt/lists/*
 
-RUN echo $(cat /ros2_ws/src/depthai-ros/package.xml | grep '<version>' | sed -r 's/.*<version>([0-9]+.[0-9]+.[0-9]+)<\/version>/\1/g') > /version.txt
+RUN echo $(cat /ros2_ws/src/depthai-ros/depthai-ros/package.xml | grep '<version>' | sed -r 's/.*<version>([0-9]+.[0-9]+.[0-9]+)<\/version>/\1/g') > /version.txt