32 Build your own Docker Image | Custom Docker Image | Dockerfiles | Kubernetes Tutorial

Build your own Docker Image | Custom Docker Image | Dockerfiles

Creating custom Docker images involves a series of steps that allow you to define the configuration, dependencies, and contents of the image. Here's a general overview of the process:

Create a Dockerfile: A Dockerfile is a text file that contains instructions for building a Docker image. In your Dockerfile, you define the steps to install dependencies, copy files into the image, set environment variables, and specify the commands to run when the container starts. Create a new file named Dockerfile (without any file extension) in your project directory.

Write Dockerfile instructions: The Dockerfile consists of a series of instructions. Some common instructions include:

FROM: Specifies the base image.
WORKDIR: Sets the working directory inside the container.
COPY or ADD: Copies files from your local system into the image.
RUN: Executes commands during the image build process.
ENV: Sets environment variables.
EXPOSE: Specifies the ports that the container listens on.
CMD or ENTRYPOINT: Defines the command to run when the container starts.
Build the Docker image: Use the docker build command to build your Docker image. Open a terminal or command prompt, navigate to the directory where your Dockerfile is located, and run the following command:

docker build -t your-image-name .

Replace your-image-name with a suitable name for your image. The dot . at the end of the command indicates the current directory as the build context.

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[karamjeetkaur]

Fantastic video on creating custom Docker images! The step-by-step instructions and clear explanations made it easy to follow along. Thanks for sharing this valuable knowledge!

[sukhveerkaur-pe]

Great tutorial! Clear and concise steps on creating custom Docker images. Thank You🙏

[akashbhatia]

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