diff --git a/cartographer_ws/.devcontainer/postCreateCommand.sh b/cartographer_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100644
index efce9e5b..00000000
--- a/cartographer_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/cartographer_ws/docker/cache/.gazebo/.gitkeep b/cartographer_ws/docker/cache/.gazebo/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/husky_ws/.devcontainer/postCreateCommand.sh b/husky_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100755
index a6a4f868..00000000
--- a/husky_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update --fix-missing
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src --rosdistro humble -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/husky_ws/docker/cache/.gazebo/.gitkeep b/husky_ws/docker/cache/.gazebo/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/kobuki_ws/.devcontainer/postCreateCommand.sh b/kobuki_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100755
index efce9e5b..00000000
--- a/kobuki_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/kobuki_ws/docker/cache/.gazebo/.gitkeep b/kobuki_ws/docker/cache/.gazebo/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/orbslam3_ws/.devcontainer/postCreateCommand.sh b/orbslam3_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100644
index efce9e5b..00000000
--- a/orbslam3_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/rtabmap_ws/.devcontainer/postCreateCommand.sh b/rtabmap_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100644
index efce9e5b..00000000
--- a/rtabmap_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/rtabmap_ws/docker/cache/.gazebo/.gitkeep b/rtabmap_ws/docker/cache/.gazebo/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/tests/lint_filenames.py b/tests/lint_filenames.py
index dbec8cf5..06860f84 100644
--- a/tests/lint_filenames.py
+++ b/tests/lint_filenames.py
@@ -34,6 +34,20 @@
             # Ref: https://docs.docker.com/compose/compose-file/04-version-and-name/#version-top-level-element-optional
             raise ValueError(f"`version` should not exist since it's obsolete: '{filename}'")
 
+# Check if all obsolete files do not exist
+OBSOLETE_FILES = [
+    "docker/cache/.gazebo/.gitkeep",
+    "docker/compose.yml",
+    "docker/docker-compose.yaml",
+    "docker/docker-compose.yml",
+    ".devcontainer/postCreateCommand.sh",
+]
+for filename in OBSOLETE_FILES:
+    print(f"Checking non-existence of: '{filename}'...")
+    for workspace_path in glob.glob(f"{repo_dir}/*_ws"):
+        if os.path.isfile(f"{workspace_path}/{filename}"):
+            raise ValueError(f"'{filename}' exists in: '{workspace_path}'")
+
 # Check if `master` branch is accidentally used
 for filename in glob.glob(f"{repo_dir}/.github/workflows/*.yaml", recursive=True):
     print(f"Checking: '{filename[len(repo_dir)+1:]}'...")
diff --git a/vlp_ws/.devcontainer/postCreateCommand.sh b/vlp_ws/.devcontainer/postCreateCommand.sh
deleted file mode 100644
index efce9e5b..00000000
--- a/vlp_ws/.devcontainer/postCreateCommand.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-sudo apt-get update
-sudo rosdep update
-# Note: The following commands are commented out to prevent unintended install/builds.
-# sudo rosdep install --from-paths src --ignore-src -y
-# sudo chown -R user /home/ros2-agv-essentials/
-# colcon build
\ No newline at end of file
diff --git a/vlp_ws/docker/cache/.gazebo/.gitkeep b/vlp_ws/docker/cache/.gazebo/.gitkeep
deleted file mode 100644
index e69de29b..00000000