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With Dockerfile you might create custom Docker images.
Hence, knowing about Dockerfile is essential.
What is Dockerfile?
It is a simple text file with a set of commands or instructions.
These commands/instructions are executed successively to perform actions on the base image to create a new docker image.
Comments Syntax
Commands + Arguments Example
Below is what your workflow will look like.
Now lets look at basic commands.
How to Create a Docker Image with a Dockerfile?
Firstly, lets create a Dockerfile.
Put the below commands/instructions in it and save it.
In this Dockerfile, ubuntu is set as the base image.
Then necessary commands and arguments are mentioned to install MongoDB.
Running a Dockerfile
The following command will create a docker image calledgeekflare_mongodbafter successful execution.
Let us verify if the docker image got created with the namegeekflare_mongodb.
initiate the docker imagegeekflare_mongodbinside a containermongo_container.
Open a new terminal and find out if mongo_container is running.
As you’re free to see, the container created fromgeekflare_mongodbimage is up and running.
I hope this gives you an idea about Dockerfile and its benefits.
You may also check out this documentation onDockerfile best practicesto learn more.
