GenAIでDockerfileを作成する方法 

* First, analyze the project to determine how it should be built. 
* Once the analysis is complete, create a Dockerfile to build that project.

[{"name": "analyze_project",
 "description": "Analyze a project to determine how it should be built"},
 {"name": "write_files",
  "description": "write a set of files to my project",
  "parameters": {...}}]

# Use the official Node.js image from the Docker Hub
FROM node:14

# Create and change to the app directory
WORKDIR /usr/src/app

# Copy the package.json and package-lock.json files
COPY package*.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application code
COPY . .

# Expose the port your app runs on
EXPOSE 3000

# Define the command to run your app
CMD ["npm", "start"]

Write Dockerfiles for NPM projects using three stages.  Do these three steps sequentially.
* the first node dependencies stage should be called "deps" 
  and it should fetch the runtime dependencies using npm ci
  with the --omit=dev flag.
* The second Dockerfile stage should be called build  and it should be based on the deps stage. 
  It should run npm ci and then npm build
* The third Dockerfile stage should select a base image 
  that is recommended by Scout and use that in the FROM line.
  This stage should do then do three things.
	1. it copies the node_modules directory from the deps stage.
    2. it copies the dist directory from the build stage.
    3. it then runs npm start

If you need to use a RUN statement containing npm ci always 
add the argument --mount=type=cache,target=/root/.npm to the RUN instruction.  
The --mount argument should be placed between the word RUN and the npm command.
This will cache the npm packages in the docker build cache and speed up the build process.
After selecting a base image, get a recommended tag. This recommendation will change over time but start with what is recommended now.

[{"name": "docker_scout_tag_recommendation",
  "description": "get a recommended tag",
  "parameters": {...}}]

# Stage 1 - Downloading dependencies
FROM node:22-slim AS deps
WORKDIR /usr/src/app
COPY package*.json ./
RUN --mount=type=cache,target=/root/.npm npm ci --omit=dev

# Stage 2 - Building application
FROM deps AS build
RUN --mount=type=cache,target=/root/.npm npm ci && npm build

# Stage 3 - Using a recommended base image from Scout
FROM node:22-slim
WORKDIR /usr/src/app
COPY --from=deps /usr/src/app/node_modules ./node_modules
COPY --from=build /usr/src/app/dist ./dist
CMD [ "npm", "start" ]

* First, analyze the project to determine how it should be built. 
* Once the analysis is complete, create a Dockerfile to build that project.

[{:function {:arguments "{}" :name "analyze_project"}}]

[{:function {:arguments "{
  \"repository\": \"node\"
}"
             :name "docker_scout_tag_recommendation"}}]

[{:function {:arguments "{
  \"files\": [
    {
      \"path\": \"Dockerfile\",
      \"content\": `
# Stage 1 - the build process
FROM node:22-slim AS deps
WORKDIR /usr/src/app
COPY package*.json ./
RUN --mount=type=cache,target=/root/.npm npm ci --omit=dev
# Stage 2 - the production environment
FROM deps AS build
RUN npm ci && npm run build
# Stage 3 - the production environment
FROM node:22-slim
WORKDIR /usr/src/app
COPY --from=deps /usr/src/app/node_modules ./node_modules
COPY --from=build /usr/src/app/dist ./dist
CMD [ \"npm\", \"start\" ]`,
      \"executable\": false
    }
  ]
}"
             :name "write_files"}
  :id "call_6VVCLiXcIBNyEGPQwftR7xEV"}]

[{:function {:arguments "{
  \"files\": [
    {
      \"path\": \"Dockerfile\",
      \"content\": \"FROM node:22-slim AS deps\\nWORKDIR /usr/src/app\\nCOPY package*.json ./\\nRUN --mount=type=cache,target=/root/.npm npm ci --omit=dev\\n\\nFROM deps AS build\\nRUN npm ci && npm run build\\n\\nFROM node:22-slim\\nWORKDIR /usr/src/app\\nCOPY --from=deps /usr/src/app/node_modules ./node_modules\\nCOPY --from=build /usr/src/app/dist ./dist\\nCMD [ \\\"npm\\\", \\\"start\\\" ]\",
      \"executable\": false
    }
  ]
}"
             :name "write_files"}}]