Docker automated build Automated Build implementation process diagram

Automated build means using Docker Hub to connect to a GitHub repository or BitBucket repository containing a Dockerfile file. Docker Hub will automatically build the image. The image built in this way will be marked as Automated Build, also known as Trusted Build. When using the image built in this way, others can freely view the Dockerfile content and know where the image came from. At the same time, since the build process is automatic, it can ensure that the images in the warehouse are the latest. The specific construction steps are as follows:

Add a warehouse

First, log in to Docker Hub, click Create in the upper right corner, and then select Create Automated Build, as shown below:

On the new page, select the Link Account button, then select Connect to GitHub. On the connection method selection page, select the first connection method, as follows:

After the selection is completed, follow the instructions to log in to GitHub and complete the authorization operation. The page after authorization is completed is as follows:

Build the image

After the authorization is completed, click the Create button in the upper right corner again, select Create Automated Build, and select GitHub on the page that opens, as shown in the following two pictures:

Here is the repository on GitHub that was just linked. There is only one docker, and then click in, as follows:

Fill in the name and description of the image, then click the Create button. The creation result is as follows:

After that, even if our image is built successfully, once the Dockerfile file in the GitHub repository is updated, the image build on Docker Hub will be automatically triggered without manual intervention, thus ensuring that the image is always up to date.

Next, users can get the image through the following command: docker pull wongsung/nginx2

After getting the image, just run it.

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