diff --git a/.gitignore b/.gitignore
index 47d5819..a631434 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,4 +44,10 @@ __pycache__/
 
 FILES/*
 .gitmodules
-!FILES/sample.txt
\ No newline at end of file
+!FILES/sample.txt
+
+# Ignore .last_build_timestamp because it stores the timestamp of the last Docker build and should not be version controlled.
+.last_build_timestamp
+
+# Ignore doc directory,because it is test doc.
+/doc
\ No newline at end of file
diff --git a/docker.sh b/docker.sh
index 6e449ef..7c9c092 100755
--- a/docker.sh
+++ b/docker.sh
@@ -1,11 +1,28 @@
 #!/bin/sh
 
+# Name of the image
+IMAGE_NAME="kaguya"
+
+# File to store the timestamp of the last build
+TIMESTAMP_FILE=".last_build_timestamp"
+
+# Get the modification timestamp of Dockerfile
+MOD_TIMESTAMP=$(date -r Dockerfile +%s)
+
 # Get Git user name and email from host machine
 GIT_NAME=$(git config --get user.name)
 GIT_EMAIL=$(git config --get user.email)
 
-# Build the Docker image
-docker build --build-arg GIT_NAME="$GIT_NAME" --build-arg GIT_EMAIL="$GIT_EMAIL" -t kaguya .
+# Check if the image already exists and if the timestamp has changed
+if [ "$(docker images -q $IMAGE_NAME 2> /dev/null)" == "" ] || [ ! -f "$TIMESTAMP_FILE" ] || [ "$MOD_TIMESTAMP" -gt "$(cat $TIMESTAMP_FILE)" ]; then
+  echo "Building the image..."
+  # Build the Docker image
+  docker build --build-arg GIT_NAME="$GIT_NAME" --build-arg GIT_EMAIL="$GIT_EMAIL" -t $IMAGE_NAME .
+  # Store the modification timestamp of Dockerfile
+  echo "$MOD_TIMESTAMP" > $TIMESTAMP_FILE
+else
+  echo "Image exists and is up to date. Starting container..."
+fi
 
 # Run the Docker container with the --rm flag (automatically remove container on exit)
-docker run --shm-size=2g --rm -p 3000:3000 -v $(pwd):/kaguya -v /kaguya/node_modules kaguya
+docker run --shm-size=2g --rm -p 9999:3000 -v $(pwd):/kaguya -v /kaguya/node_modules $IMAGE_NAME
diff --git a/public/.well-known/ai-plugin.json b/public/.well-known/ai-plugin.json
index 89e3181..3e6c8cb 100644
--- a/public/.well-known/ai-plugin.json
+++ b/public/.well-known/ai-plugin.json
@@ -9,7 +9,7 @@
   },
   "api": {
     "type": "openapi",
-    "url": "http://localhost:3000/openapi.yaml",
+    "url": "http://localhost:9999/openapi.yaml",
     "is_user_authenticated": false
   },
   "logo_url": "https://images.squarespace-cdn.com/content/v1/59518b28cd0f684eae15259e/c8be2bdb-dd07-43ff-a268-db52c39925b0/csdlogo.jpg",
diff --git a/public/openapi.yaml b/public/openapi.yaml
index 4891152..0c37616 100644
--- a/public/openapi.yaml
+++ b/public/openapi.yaml
@@ -4,7 +4,7 @@ info:
   description: A project that you can edit just by talking to ChatGPT.
   version: v1
 servers:
-  - url: http://localhost:3000
+  - url: http://localhost:9999
 paths:
   /api/executeCommand:
     post: