diff --git a/.devcontainer/compose.yaml b/.devcontainer/compose.yaml
index add20365..2543a97a 100644
--- a/.devcontainer/compose.yaml
+++ b/.devcontainer/compose.yaml
@@ -3,9 +3,11 @@ services:
     build: slackbot
     volumes:
       - ..:/code
+      - /code/node_modules
+      - /code/functions/node_modules
     stdin_open: true
     tty: true
-    command: sh -c "echo hoge"
+    command: sleep infinity
     environment:
       - TEAM_ID=${TEAM_ID}
       - SIGNING_SECRET=${SIGNING_SECRET}
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index ee442039..4dede5ba 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -17,8 +17,6 @@
 		"ghcr.io/devcontainers/features/common-utils:2": {
 			"installZsh": "true",
 			"username": "slackbot",
-			"userUid": "1000",
-			"userGid": "1000",
 			"upgradePackages": "true"
 		}
 	},
@@ -27,24 +25,10 @@
 		"tunnel"
 	],
 	"postAttachCommand": "docker logs slackbot_devcontainer-tunnel-1 && docker attach slackbot_devcontainer-tunnel-1",
-	"onCreateCommand": "cp -RTf ~/.cache/slackbot/node_modules /code/node_modules && cp -RTf ~/.cache/slackbot-functions/node_modules /code/functions/node_modules",
-	"postStartCommand": "echo 'postStart: Please run `docker-compose up` to start the services.'",
-	"postCreateCommand": "echo 'postCreate: Please run `docker-compose up` to start the services.'",
-	"initializeCommand": "echo 'initialize: Please run `docker-compose up` to start the services.'",
-	"updateContentCommand": "echo 'updateContent: Please run `docker-compose up` to start the services.'"
-
-	// Features to add to the dev container. More info: https://containers.dev/features.
-	// "features": {},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
 
-	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "yarn install",
-
 	// Configure tool-specific properties.
 	// "customizations": {},
-
-	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
-	// "remoteUser": "root"
 }
diff --git a/.devcontainer/slackbot/Dockerfile b/.devcontainer/slackbot/Dockerfile
index 7ce21844..fb4c0cd6 100644
--- a/.devcontainer/slackbot/Dockerfile
+++ b/.devcontainer/slackbot/Dockerfile
@@ -5,18 +5,11 @@ FROM node:20-bookworm
 RUN apt-get update -y && \
     apt-get install build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev -y && \
     apt-get install git bash -y && \
-    mkdir -p /code/functions && \
     mkdir -p ~/.cache/slackbot/node_modules && \
     mkdir -p ~/.cache/slackbot-functions/node_modules && \
+    git clone https://github.com/tsg-ut/slackbot.git --branch master --single-branch --recursive --depth 1 /code && \
     cd /code && \
-    ln -s ~/.cache/slackbot/node_modules node_modules && \
-    ln -s ~/.cache/slackbot-functions/node_modules functions/node_modules && \
-    wget https://github.com/tsg-ut/slackbot/raw/refs/heads/master/package.json && \
-    wget https://github.com/tsg-ut/slackbot/raw/refs/heads/master/package-lock.json && \
-    wget https://github.com/tsg-ut/slackbot/raw/refs/heads/master/functions/package.json -O functions/package.json && \
-    wget https://github.com/tsg-ut/slackbot/raw/refs/heads/master/functions/package-lock.json -O functions/package-lock.json && \
-    npm install --ignore-scripts && \
-    npm install --ignore-scripts --prefix functions && \
+    npm install && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*