This tutorials will walk you through how to build and push a container image to Docker Hub (Docker's public container registry) and then import it into Uffizzi.
Prerequisites
This tutorial assumes that you have already completed the following prerequisite steps:
Create a repository on Docker Hub
To create a repo:
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Sign in to Docker Hub.
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Click on Create Repository:
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Name it <your-username>/my-first-repo as shown below. Select Private:
- Now that you've created a repo, you should see:
Download Docker Desktop and login
You’ll need to download Docker Desktop to build and push a container image to Docker Hub.
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Download and install Docker Desktop. If on Linux, download Docker Engine - Community.
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Open the terminal and sign in to Docker Hub on your computer by running
docker login.
Build and push a container image to Docker Hub from your computer
Docker can build images automatically by reading the instructions from a Dockerfile. A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image. Using docker build users can create an automated build that executes several command-line instructions in succession.
- Start by creating a Dockerfile for your app. Below are some examples if you need help getting started.
- Example Dockerfile for Node.js
- Example Dockerfile for Python
- Example Dockerfile for React
- Example Dockerfile for Ruby
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Run
docker build -t <your_username>/my-first-repo .to build your Docker image. -
Run
docker run <your_username>/my-first-repoto test your Docker image locally. -
Run
docker push <your_username>/my-first-repoto push your Docker image to Docker Hub.
And in Docker Hub, your repository should have a new latest tag available under Tags:
