Split host setup into explicit entity actions

actions/config/docker.py

@@ -0,0 +1,12 @@
+"""Install a local Docker Engine, Compose and Buildx on Debian 13."""
+from pathlib import Path
+
+from engine.descriptor import Meta
+
+METADATA = Meta(summary="Verify a working Docker toolchain or install it on stock Debian 13.")
+
+
+def run(ctx, args):
+    provisioning = Path(ctx.paths.commons) / "ci/scripts/init-node"
+    ctx.sys.sudo(["python3", "-E", "-s", "-m", "provisioning.baseline", "--docker-policy"],
+                 cwd=str(provisioning))