Demo - [Guidelines] - Adding Dockerfile #93
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PR Review❌ Docker & containerization: Optimize Dockerfiles with multi-stage builds and avoid running as root for security. Generated by Firstmate to make sure you can focus on coding new features. |
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| FROM node:19-alpine | ||
| ENV PORT 8080 | ||
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| WORKDIR /usr/src/app | ||
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| RUN apk add --no-cache git | ||
| COPY . . | ||
| EXPOSE 8080 | ||
| CMD ["npm", "start", "--no-update-notifier"] |
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Your Dockerfile should implement multi-stage builds to optimize image size and improve build performance. You can create a builder stage to install dependencies and build the application, then copy only the necessary files to a smaller runtime image. Here's an example:
FROM node:19-alpine AS builder
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
FROM node:19-alpine
WORKDIR /usr/src/app
COPY --from=builder /usr/src/app .
EXPOSE 8080
CMD ["npm", "start", "--no-update-notifier"]
| FROM node:19-alpine | ||
| ENV PORT 8080 | ||
|
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||
| WORKDIR /usr/src/app | ||
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| RUN apk add --no-cache git | ||
| COPY . . | ||
| EXPOSE 8080 | ||
| CMD ["npm", "start", "--no-update-notifier"] |
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The Dockerfile is currently running as the root user, which poses a security risk. It's better to create a non-root user and switch to it by adding the following lines to your Dockerfile:
RUN addgroup -S appgroup && adduser -S appuser -G appgroup
USER appuser
💡 PR Summary generated by FirstMate
Overview: Added a Dockerfile to containerize the application for easier deployment.
Changes:
New Dockerfile:
/Dockerfileto define the application environment.node:19-alpinefor a lightweight container./usr/src/app.gitusing Alpine package manager.8080for application access.npm.TLDR: A Dockerfile was added to facilitate application containerization; focus on the configuration and commands defined within.
Generated by FirstMate and automatically updated on every commit.