auto-create sandbox dirs and switch to host socket compose

adapter/http/fastapi/app.py

@@ -1,5 +1,6 @@
 import asyncio
 from collections.abc import Awaitable, Callable
+from pathlib import Path
 
 from docker.errors import NotFound
 from fastapi import FastAPI
@@ -61,6 +62,12 @@ def _ensure_sandbox_network(container: AppContainer) -> None:
         )
 
 
+def _ensure_sandbox_dirs(container: AppContainer) -> None:
+    cfg = container.config.sandbox
+    for path_str in (cfg.dependencies_host_path, cfg.lambda_tools_host_path):
+        Path(path_str).mkdir(parents=True, exist_ok=True)
+
+
 def _build_startup_handler(
     app: FastAPI,
     container: AppContainer,
@@ -71,6 +78,7 @@ def _build_startup_handler(
             return
 
         await asyncio.to_thread(_ensure_sandbox_network, container)
+        await asyncio.to_thread(_ensure_sandbox_dirs, container)
         await asyncio.to_thread(container.sandbox_reconciler.execute)
 
         stop_event = asyncio.Event()

config/docker-compose.yml

@@ -25,7 +25,7 @@ otel:
   metric_export_interval: 1000
 
 docker:
-  base_url: tcp://docker-engine:2375
+  base_url: unix:///var/run/docker.sock
 
 sandbox:
   image: nginx:1.27-alpine
@@ -33,9 +33,9 @@ sandbox:
   agent_service_port: 8000
   ttl_seconds: 300
   cleanup_interval_seconds: 60
-  chats_root: /var/lib/master-sandbox/chats
-  dependencies_host_path: /var/lib/master-dependencies
-  lambda_tools_host_path: /var/lib/master-lambda-tools
+  chats_root: /tmp/master-sandbox/chats
+  dependencies_host_path: /tmp/master-sandbox/dependencies
+  lambda_tools_host_path: /tmp/master-sandbox/lambda-tools
   chat_mount_path: /workspace/chat
   dependencies_mount_path: /opt/dependencies
   lambda_tools_mount_path: /opt/lambda-tools

docker-compose.yml

@@ -6,8 +6,6 @@ services:
       target: run
     user: root
     depends_on:
-      docker-engine:
-        condition: service_healthy
       otel-collector:
         condition: service_started
     environment:
@@ -17,30 +15,9 @@ services:
       - '127.0.0.1:8123:8123'
     volumes:
       - ./config/docker-compose.yml:/app/config/app.yaml:ro
-      - sandbox-data:/var/lib/master-sandbox
-      - sandbox-dependencies:/var/lib/master-dependencies:ro
-      - sandbox-tools:/var/lib/master-lambda-tools:ro
-
-  docker-engine:
-    image: docker:28-dind
-    privileged: true
-    environment:
-      DOCKER_TLS_CERTDIR: ''
-    command:
-      - --host=tcp://0.0.0.0:2375
-    healthcheck:
-      test:
-        - CMD
-        - docker
-        - info
-      interval: 5s
-      timeout: 5s
-      retries: 12
-    volumes:
-      - docker-data:/var/lib/docker
-      - sandbox-data:/var/lib/master-sandbox
-      - sandbox-dependencies:/var/lib/master-dependencies
-      - sandbox-tools:/var/lib/master-lambda-tools
+      - /var/run/docker.sock:/var/run/docker.sock
+      - /tmp/master-sandbox:/tmp/master-sandbox
+      - /tmp/master-volume:/tmp/master-volume
 
   otel-collector:
     image: grafana/otel-lgtm:latest
@@ -50,8 +27,4 @@ services:
       - lgtm-data:/data
 
 volumes:
-  docker-data:
   lgtm-data:
-  sandbox-data:
-  sandbox-dependencies:
-  sandbox-tools: