DEVX-151: perf: skip dep resolution in setup-image with --no-deps

src/devx/tools/setup_image.py

@@ -64,9 +64,11 @@ def _install_in_image(
     link.symlink_to(opt_venv)
 
     # Build pip install command
+    # --no-deps: the CI image already has all dependencies pre-installed.
+    # We only need to install the project itself in editable mode.
     spec = f".[{extras}]" if extras else "."
     pip_bin = str(Path(venv_link) / "bin" / "pip")
-    cmd = [pip_bin, "install", "--no-cache-dir", "-e", spec]
+    cmd = [pip_bin, "install", "--no-cache-dir", "--no-deps", "-e", spec]
 
     env = os.environ.copy()
     try: