add docker & api route

[wvl94]

💡 PR Summary generated by FirstMate

Overview: Added Docker support and a new API route for enhanced functionality.

Changes:
Dockerfile creation:

• Added a Dockerfile to containerize the application using Node.js 19-alpine.
• Configured environment variables and user permissions for better security.

API route updates:

• Introduced a new route /get/:id in exampleRouter.js for fetching data by ID.
• Maintained existing route functionality with permission middleware.

Configuration adjustment:

• Changed default server port from 8080 to 80 in appConfig.js for consistency.

TLDR: This PR adds Docker support, a new API route for data retrieval, and adjusts the server port configuration. Review the Dockerfile and new route in exampleRouter.js.

_{^{Generated by FirstMate and automatically updated on every commit.}}

[firstmate]

PR Review

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

    ❌ Documentation drift: Update documentation for port changes to 8080.
    ❌ Security issues: Add grantAccessByPermissionMiddleware to '/get/:id' route.
    ❌ Docker best practices: Implement multi-stage builds in Dockerfile.

_{^{Generated by Firstmate to make sure you can focus on coding new features.}}

[firstmate]

You changed the application to run on port 8080 in the Dockerfile. Additionally, the default server port in appConfig.js has been changed to 80. This change seems important, so it might be smart to update the documentation accordingly. Make sure to specify the correct port for running the application.

Example documentation update:

## Running the Application

To start the application, use the following command:

```bash
docker run -p 8080:8080 your-image-name

The application will be accessible at http://localhost:8080.

[firstmate]

The newly added route '/get/:id' does not implement the grantAccessByPermissionMiddleware, which is required for proper access control. Update the route to include the middleware as follows:

router.route("/get/:id").get(grantAccessByPermissionMiddleware([API_PERMISSIONS.PUBLIC_ENDPOINT]), exampleController.getById);

This ensures compliance with the security guidelines.

(Based on guideline 'Routes should check permissions')

[firstmate]

Your Dockerfile does not implement multi-stage builds, which can significantly reduce the final image size and separate build dependencies from runtime dependencies. Consider restructuring it like this:

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"]

This approach will optimize your image size and improve build efficiency.

(Based on guideline 'Dockerfiles should use multi-stage builds')

[firstmate]

I analysed the failed pipeline job Validate docker:

Failure Analysis

The pipeline crashed during the Docker build step, specifically when executing the command to install git using apk. The error logs indicate a permission issue:

ERROR: Unable to lock database: Permission denied
ERROR: Failed to open apk database: Permission denied

This suggests that the RUN apk add --no-cache git command is being executed as a non-root user (appuser), which does not have the necessary permissions to modify the system package database. This issue is likely related to the Dockerfile configuration rather than the changes in the PR.

Suggested Fix

To resolve the permission issue, you can modify the Dockerfile to install git as the root user before switching to the appuser. Here’s a small change to the Dockerfile:

-    USER appuser
+    USER root
     RUN apk add --no-cache git
+    USER appuser

This change ensures that the apk add command runs with the necessary permissions, allowing the installation to complete successfully. After this adjustment, the pipeline should pass the Docker build step.

[firstmate]

PR Review

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

    ❌ Documentation drift: Update documentation for port changes (8080 in Dockerfile, 80 in appConfig.js).
    ❌ Security issues: New route '/get/:id' lacks permission middleware; update to include grantAccessByPermissionMiddleware.
    ❌ Docker best practices: Dockerfile should use multi-stage builds for efficiency; restructure accordingly.

_{^{Generated by Firstmate to make sure you can focus on coding new features.}}

[firstmate]

You changed the application to run on port 8080 in the Dockerfile. Additionally, the default server port in appConfig.js was changed to 80. These changes are important and should be documented to ensure users know how to start the application correctly. Consider updating the documentation to reflect the following:

## Running the Application

To start the application, use the following command:

```bash
docker run -p 8080:8080 your-image-name

The application will run on port 8080 by default.

If you are running the application directly, it will now default to port 80.

[firstmate]

The new route '/get/:id' does not use the grantAccessByPermissionMiddleware. Ensure that all routes check permissions using this middleware to adhere to security guidelines. Update it like this:

+ router.route("/get/:id").get(grantAccessByPermissionMiddleware([API_PERMISSIONS.PUBLIC_ENDPOINT]), exampleController.getById)

(Based on guideline 'Check permissions with middleware')

[firstmate]

The Dockerfile does not utilize multi-stage builds, which can significantly reduce the final image size and improve build efficiency. Restructure it to include a build stage and a final stage like this:

FROM node:19-alpine AS build
# Add build commands here

FROM node:19-alpine AS final
COPY --from=build /path/to/artifacts /app

This approach will help streamline your image creation process.

(Based on guideline 'Dockerfiles should use multi-stage builds')

[firstmate]

I analysed the failed pipeline job Validate docker:

Failure Analysis

The pipeline crashed during the Docker build step, specifically when trying to install git using the command apk add --no-cache git. The error logs indicate a permission issue:

ERROR: Unable to lock database: Permission denied
ERROR: Failed to open apk database: Permission denied

This suggests that the Dockerfile is attempting to run the apk command as a non-root user (appuser), which does not have the necessary permissions to modify the package database. The relevant part of the Dockerfile is:

USER appuser
RUN apk add --no-cache git

Suggested Fix

To resolve the permission issue, you can modify the Dockerfile to switch back to the root user before running the apk command, and then switch back to the appuser. Here’s how you can adjust the Dockerfile:

- USER appuser
+ USER root
RUN apk add --no-cache git
+ USER appuser

This change allows the apk command to execute with the necessary permissions to install packages, preventing the permission denied error.