- DOCKER RUN IMAGE INSTALL DIRECTORY HOW TO
- DOCKER RUN IMAGE INSTALL DIRECTORY UPDATE
- DOCKER RUN IMAGE INSTALL DIRECTORY FULL
- DOCKER RUN IMAGE INSTALL DIRECTORY CODE
Next, WORKDIR /App sets the Docker working directory to /App so that any commands you run inside Docker are executed in /App. ADD /App /App takes the App folder from our machine and copies it into the Docker container. The last part of Dockerfile is to set up the working directory of the app itself. NodeJS is for Javascript, but if you were working with other languages such as Python, you would install whatever programs you need to run your Python app. And finally, we can run n (latest version of NodeJS) with RUN n stable. Then clean up npm to make way for n using RUN npm cache clean -f. Install NodeJS and NPM with RUN apt-get install nodejs -y & apt-get install npm -y. Since we want to be using ES6 features, we will need the latest version of NodeJS attained via the node module n. The next set of lines is setup specific to NodeJS. Also install curl RUN apt-get install curl -y and vim RUN apt-get install vim -y, both nice to have for general purposes.
DOCKER RUN IMAGE INSTALL DIRECTORY UPDATE
We want to check for Ubuntu updates with RUN apt-get update -y and upgrades with RUN apt-get upgrade -y… pretty standard stuff for setting up your environment. The next set of lines is setup within Ubuntu. ubuntu here is referring to a specific image hosted on Docker Hub, specifically the official Ubuntu OS Image. The purpose of Dockerfile is to set up the OS and programs inside the OS, so it makes sense that the first line specifies which OS version to use. RUN apt-get install nodejs -y & apt-get install npm -y
So let’s make the first Docker file called Dockerfile (no file extension Dockerfile.sh, just Dockerfile) and walk through it line-by-line. This is necessary as Docker will be containerizing everything inside App. The web app itself resides in this App folder, whereas all the Docker-related stuff is outside. In the root of our app directory, there is a folder called App. Docker Images are simply blueprints of environments that you want to create while containers are the actual running and functional environments that your app will be executed in. The first step is to configure the files required for Docker to build itself an image. If all this works, you are ready to start Dockerizing! Step 1: Building the Dockerfile The last command checks if Docker is successfully running, and then exits.
DOCKER RUN IMAGE INSTALL DIRECTORY FULL
Below is the quick and simple way to install Docker, but if you want the full configuration checkout the official docs. Dockerfileīefore we can use Docker, we must first install it. These are the files we will use with Docker. Once you have it downloaded, go into the folder and find the below files.
DOCKER RUN IMAGE INSTALL DIRECTORY CODE
The code you see will be for setting up this web app, but the steps are the same for any project. See those benefits? Cool, now we can start! Getting StartedĮnter your EC2 instance and clone Kangzeroos-ES6-React-Redux-Boilerplate from Github. This setup requires 1GB for the host OS and perhaps 600MB per container (because 300MB is hypothetically shared with the host OS), for a total of 2.8GB required. The most significant difference is that a container engine is more lightweight because it can share certain hardware resources with its host OS, unlike traditional VMs that require their own separate allocation. On the right side is a container setup, which would run a container engine such as Docker.
If each Guest OS needs 1GB of memory, and the host uses 1GB of memory, then the setup on the left would require 4GB total. A hypervisor is simply your VM manager responsible for allocating hardware resources to each virtual OS. On the left side is your traditional virtual machine setup using a hypervisor.
DOCKER RUN IMAGE INSTALL DIRECTORY HOW TO
Today we will learn how to setup and deploy Docker on Amazon EC2 in 3 easy steps!īefore we start, take a look at this high-level diagram (courtesy of ).
That means full compatibility… no more worrying about OS versions, dependencies and differences between your development and production machines! And to top it off, it’s lightweight so you can run multiple Docker containers in the same machine (EC2 instance). The containerization service makes deploying microservices easy and stable, as each service can run an OS in its own virtual environment. By Kangze Huang Docker: Easy as build, run, done!ĭocker has been getting a lot of buzz recently, and for good reason.
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