Demo - [Failed Pipeline] - Added dockerfile bug

[wvl94]

💡 PR Summary generated by FirstMate

Overview: Added a Dockerfile to streamline the application build process.

Changes:
New Dockerfile:

• Created /Dockerfile for building the Node.js application.
• Utilizes multi-stage builds to optimize image size.
• Installs dependencies and sets up the application to run on port 8080.

TLDR: A new Dockerfile has been added to facilitate the build process; please review the multi-stage build setup.

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[firstmatebot]

PR Review

⚠️ It seems that you can still improve the quality of your PR:

    ❌ Docker & containerization: Dockerfile must specify a non-root user to enhance security and limit privileges.

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[firstmatebot]

The Dockerfile does not specify a non-root user, which can pose security risks. You should add a non-root user to enhance security by including the following lines:

RUN addgroup -S appgroup && adduser -S appuser -G appgroup
USER appuser

This ensures the application runs with limited privileges.

[firstmatebot]

I analysed the failed pipeline job Validate docker:

Failure Analysis

The pipeline crashed during the docker build step due to a failure in the Dockerfile at line 9, where it attempts to copy the node_modules directory from the build stage. The error message indicates that the /node_modules directory was not found:

ERROR: failed to calculate checksum of ref ...: "/node_modules": not found

This suggests that the npm install command did not successfully create the node_modules directory in the build stage. This could be due to:

• Missing or incorrect dependencies in package.json.
• Errors during the npm install process that were not captured in the logs provided.

Suggested Fix

To resolve this issue, ensure that the npm install command runs successfully and creates the node_modules directory. You can modify the Dockerfile to check for errors during the installation:

4 + RUN npm install || { echo 'npm install failed'; exit 1; }

This change will provide a clearer error message if npm install fails, helping to diagnose the underlying issue. Additionally, verify the contents of package.json to ensure all dependencies are correctly defined.