📕Deploy an Application with a Dockerfile on Clouddley Triggr

Deploying applications with a Dockerfile on Clouddley Triggr allows you to containerize and manage your application efficiently. This guide provides step-by-step instructions on deploying an Express.js application using a Dockerfile, ensuring a seamless and reliable deployment process.

Prerequisites

• A GitHub or Bitbucket Account.

• A Clouddley account.

• Basic understanding of Docker.

• An Express.js application.

• A virtual machine on a Cloud platform or bare metal server.

Creating a Dockerfile

In the application root directory, create a Dockerfile triggr.dockerfile that defines how the app should be containerized.

# Use an official Node.js runtime as a parent image
FROM node:18-alpine

# Set the working directory in the container
WORKDIR /app

# Copy package.json and package-lock.json first for dependency installation
COPY package*.json ./

# Install dependencies
RUN npm install --omit=dev  # Use --omit=dev for production builds

# Copy the rest of the application code
COPY . .

# Expose the application port (ensure it matches the port your app listens on)
EXPOSE 3011

# Define the command to run the application
CMD ["node", "./bin/www"]

Building and Running the Container Locally

Before deploying to Triggr Apps, verify that the container works locally.

1. Build the Docker image:

   Copy

   docker build -t my-express-app -f triggr.dockerfile .

2. Run the container:

   Copy

   docker run -d -p 3011:3011 --name express-container my-express-app

3. Verify the app is running by visiting http://localhost:3011.

Deploying the Application

Accessing Clouddley Triggr

• Open your web browser, log in to your Clouddley account

• Navigate to Triggr Apps and click on Deploy App.

Step 1: Configure Service

• Choose your Git hosting service; either GitHub or Bitbucket. For this tutorial, we will be using GitHub.

• Click on Continue with GitHub

Step 2: Configure Git

• To connect your GitHub user or organization account, click the Select username/organization dropdown and Add GitHub account.

• Select your repository and the branch from the dropdown list or quickly search.

• Click on NEXT

Step 3: Configure your Virtual Machine

• To configure your VM, insert your VM hostname or IP address, VM user, and the VM port for SSH access.

• Use the Clouddley CLI (recommended) or connect via SSH to verify.

curl -L https://raw.githubusercontent.com/clouddley/cli/main/install.sh | sh

clouddley triggr install

ssh-copy-id -f -i ~/path/to/downloaded/Publickey username@ipaddress

• Click on Verify. This verifies the connection.

• Click on NEXT

Step 4: Configure app settings

Insert the name of the application and its port.

Step 5: Configure Environment Variables

• To add environment variables, click on ➕ Add Variable

• Choose an ENV mode, which can be either single or import variables. Learn more here.

Single Variable

Import Variables

• Add the key-value pairs and Click on Save

• Click on NEXT

Step 6: Setup Notifications (optional)

• To configure the notification settings of the application, click on ➕ Add Alert

• Select the Alert type. For this tutorial, we will set up Email alerts.

• Toggle on the buttons of the deployment event (failed, timed out, or success) you want to be notified of.

• Enter the Email address where you want to receive alerts. (You can add multiple email addresses)

• Click on Save

• Click on Deploy

Step 7: Test and Verify the app

• Click on Go to Dashboard. Your app will be visible on the Triggr apps dashboard.

• After the app deployment is complete, the app status changes from deploying to running

• Click on 🌐 Website at the top right corner of the page, this opens the URL of the deployed application in your browser.

• You can test the application functionalities.

The Express.js application has been successfully deployed on Triggr with a Dockerfile. You can manage it from the application dashboard by selecting the three-dot menu (…) in the top-right corner, where you will find options to Edit, Instant Rollback, Scale, Pause, or Delete the deployment.

Additionally, you can navigate through the dashboard tabs to:

• View deployment history

• Access and download logs

• Add a custom domain

• View and manage environment variables

Conclusion

Following these steps, you have successfully deployed an Express.js application with a Dockerfile on Clouddley Triggr. This method ensures a consistent, scalable, and efficient deployment workflow. Check out the source code for this application here.