Dockerfile node example

To Dockerize the Node.js app, you need to create a Dockerfile under /node_app and then build and run the container. Follow the below

This assumes you have a working node application located at /node_app/

Step 1: Create the Dockerfile

Navigate to the /node_app/ directory:

cd /node_app

Create the Dockerfile:

nano Dockerfile

Add the following content:

# Use a Node image as the base
FROM node:latest

# Set the working directory
WORKDIR /node_app

# Copy package.json to the container
COPY package.json ./

# Install dependencies
RUN npm install

# Copy the rest of the application files
COPY . .

# Expose port 5001
EXPOSE 5001

# Start the application using server.js
CMD ["node", "server.js"]

Save and exit.

---

Step 2: Build the Docker Image

Run the following command to build the Docker image:

docker build -t nautilus/node-web-app .

---

Step 3: Run the Container

Now, create and start the container using the required name and port mapping:

docker run -d --name nodeapp_nautilus -p 8094:5001 nautilus/node-web-app

• -d: Runs the container in detached mode.
• --name nodeapp_nautilus: Sets the container name.
• -p 8094:5001: Maps host port 8094 to container port 5001.

---

Step 4: Verify the Running Container

Check if the container is running:

docker ps

Confirm that the logs show no errors:

docker logs nodeapp_nautilus

---

Step 5: Test the Deployment

Run the curl command to verify that the app is accessible:

curl http://localhost:8094

If the response comes back correctly, the app is running successfully! 🚀 Let me know if you need further tweaks or troubleshooting.