chore(devcontainer): adapt to docker compose, add valkey service

Signed-off-by: Xe Iaso <me@xeiaso.net>

.devcontainer/docker-compose.yaml

@@ -0,0 +1,17 @@
+services:
+  valkey:
+    image: valkey/valkey:8
+    pull_policy: always
+
+  # VS Code workspace service
+  workspace:
+    image: ghcr.io/techarohq/anubis/devcontainer
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+      cache_from:
+        - "type=registry,ref=ghcr.io/techarohq/anubis/devcontainer"
+    volumes:
+      - ../:/workspace/anubis:cached
+    #entrypoint: ["/usr/bin/sleep", "infinity"]
+    user: vscode