How to build a Nodejs app on docker

1. How do I create a node JS Docker project?
2. How do I create a node app?
3. How do I run a node JS Docker image?
4. How do I deploy a node JS application?
5. What is Docker Build command?
6. What is NPM install?
7. How do I run a node project?
8. Is node js a Web server?
9. Where should NPM be installed?
10. How do I Dockerize my application?
11. How do I start Docker?
12. How do I run Docker?

How do I create a node JS Docker project?

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1. Prerequisites.
2. Create an Express Node.js application.
3. Add Docker files to the project.
4. Add an environment variable to the image.
5. Run the service locally.
6. Build the service image.
7. Run the service container.
8. Debug in the service container.

How do I create a node app?

Creating Node. js Application

1. Step 1 - Import Required Module. We use the require directive to load the http module and store the returned HTTP instance into an http variable as follows − var http = require("http");
2. Step 2 - Create Server. We use the created http instance and call http. ...
3. Step 3 - Testing Request & Response.

How do I run a node JS Docker image?

Create the Node.

json file, run npm install . If you are using npm version 5 or later, this will generate a package-lock. json file which will be copied to your Docker image. Then, create a server.

How do I deploy a node JS application?

1. STEP 1: Create a “package.json” file using the following command. ...
2. STEP 3: Create a html file “head.html” ...
3. STEP 4: Create another html file “tail.html” ...
4. STEP 5: Open “app.js” file created in step 2 and copy paste the following code in it. ...
5. STEP 6: Open the terminal again and write the following command to run the server.

What is Docker Build command?

The docker build command builds Docker images from a Dockerfile and a “context”. A build's context is the set of files located in the specified PATH or URL . The build process can refer to any of the files in the context. For example, your build can use a COPY instruction to reference a file in the context.

What is NPM install?

npm install downloads a package and it's dependencies. npm install can be run with or without arguments. When run without arguments, npm install downloads dependencies defined in a package. json file and generates a node_modules folder with the installed modules.

How do I run a node project?

The usual way to run a Node. js program is to run the node globally available command (once you install Node. js) and pass the name of the file you want to execute. While running the command, make sure you are in the same directory which contains the app.

Is node js a Web server?

Node. js is a Javascript run-time environment built on Chrome's V8 Javascript engine. It comes with a http module that provides a set of functions and classes for building a HTTP server. For this basic HTTP server, we will also be using file system, path and url, all of which are native Node.

Where should NPM be installed?

npm install -g pm2 - pm2 will be installed globally. It will then typically be found in /usr/local/lib/node_modules (Use npm root -g to check where.) The command npm root will tell you the effective installation directory of your npm packages.

How do I Dockerize my application?

Let's get started.

1. Choose a base Image. There are many technology specific base images, such as: ...
2. Install the necessary packages. ...
3. Add your custom files. ...
4. Define which user will (or can) run your container. ...
5. Define the exposed ports. ...
6. Define the entrypoint. ...
7. Define a Configuration method. ...
8. Externalize your data.

How do I start Docker?

Get started with Docker Compose

1. Step 1: Setup. ...
2. Step 2: Create a Dockerfile. ...
3. Step 3: Define services in a Compose file. ...
4. Step 4: Build and run your app with Compose. ...
5. Step 5: Edit the Compose file to add a bind mount. ...
6. Step 6: Re-build and run the app with Compose. ...
7. Step 7: Update the application. ...
8. Step 8: Experiment with some other commands.

How do I run Docker?

How to Use the docker run Command

1. Run a Container Under a Specific Name. ...
2. Run a Container in the Background (Detached Mode) ...
3. Run a Container Interactively. ...
4. Run a Container and Publish Container Ports. ...
5. Run a Container and Mount Host Volumes. ...
6. Run a Docker Container and Remove it Once the Process is Complete.