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 update:

• Introduced a new GET route /get/:id in exampleRouter.js for fetching data by ID.

Configuration change:

• Updated serverPort method in appConfig.js to default to port 80 instead of 8080.

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

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

[firstmatebot]

PR Review

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

    ❌ Documentation drift: Update documentation for port changes in Dockerfile and appConfig.js.
    ❌ Security issues: Add grantAccessByPermissionMiddleware to '/get/:id' route for access control.
    ❌ Dockerfile optimization: Implement multi-stage builds in Dockerfile to reduce image size.

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

[firstmatebot]

You changed the application to run on port 8080 in the Dockerfile. This change seems important, so it might be smart to change the documentation accordingly. Additionally, the default server port in appConfig.js was changed to 80. Ensure that the documentation reflects the correct ports 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.

Configuration

The application runs on port 80 by default unless specified otherwise in the environment variables.

[firstmatebot]

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 like this:

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')

[firstmatebot]

Your Dockerfile currently builds in a single stage, which isn't optimal. To improve it, consider using multi-stage builds to reduce image size and streamline the build process. For example:

FROM node:19-alpine AS build
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
FROM node:19-alpine AS final
WORKDIR /usr/src/app
COPY --from=build /usr/src/app .
EXPOSE 8080
CMD ["npm", "start", "--no-update-notifier"]

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

[firstmatebot]

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 message indicates 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 package database. This issue likely existed prior to the current PR changes, as the PR only adds a new route in the Express router and does not alter the Dockerfile or user permissions.

Suggested Fix

To resolve the permission issue, you can modify the Dockerfile to switch back to the root user before running the apk add 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 ensures that the apk command has the necessary permissions to execute successfully.

[firstmatebot]

PR Review

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

    ❌ Documentation drift: Update documentation for port changes in Dockerfile and appConfig.js.
    ❌ Security issues: Missing permission middleware on '/get/:id' route.
    ❌ Docker best practices: Implement multi-stage build in Dockerfile for optimization.

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

[firstmatebot]

You changed the default port for the application to 8080 in the Dockerfile. This change seems important, so it might be smart to change the documentation accordingly.

Additionally, the server port in appConfig.js was changed to 80, which also needs to be documented.

Example snippet for 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.

[firstmatebot]

The route '/get/:id' is missing the grantAccessByPermissionMiddleware, which is essential for proper permission checks. Update the route definition to include this middleware as follows:

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

(Based on guideline 'Routes should check permissions')

[firstmatebot]

Consider using a multi-stage build in your Dockerfile to optimize the image size and enhance security. You can separate the build environment from the runtime environment like this:

FROM node:19-alpine AS build
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .

FROM node:19-alpine
WORKDIR /usr/src/app
COPY --from=build /usr/src/app ./
EXPOSE 8080
CMD ["npm", "start", "--no-update-notifier"]

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