Ensure that changes to the application code work without a restart.Synchronize the application code on the host with the code in the container to facilitate changes during development.Because this application works with Node and MongoDB, your setup will do the following: You will create two containers - one for the Node application and another for the MongoDB database - with Docker Compose.
This tutorial will show you how to set up a development environment for a Node.js application using Docker.
Environments are portable, allowing you to package and share your code with others. Environments are isolated, making it easier to troubleshoot issues and onboard new team members. Environments are consistent, meaning that you can choose the languages and dependencies you want for your project without worrying about system conflicts. Working with containers in development offers the following benefits: t docker-express-app - represents the name for the image along with its tag, here, we leave the tag to be default (latest).If you are actively developing an application, using Docker can simplify your workflow and the process of deploying your application to production. checks for the Dockerfile in the current directory, using which the image is built. Build the image using Dockerfileīeing in your project directory, run the following command. A dds index.js from our app to the image.ĬMD - Executes node index.js, which is the command to run our app 3. RUN npm install - This command installs the dependencies mentioned in our package.jsonĪDD index.js. We are adding our package.json and package-lock.json to our workdir. If the directory specified doesn’t exist in the image, it is newly created.ĪDD package*.json. WORKDIR - We are mentioning that the directory called app is going to hold our project. CMD įROM node:14.17.0-alpine -From the base image node, with the version 14.17.0 and alpine variant. FROM node:14.17.0-alpine WORKDIR /app ADD package*.json. ( Dockerfile - contains all the commands that are to be executed, to build an image).Ĭreate a file named Dockerfile (with no extension).
0 kommentar(er)
