Exercise - Build container images using Azure Container Registry Tasks

  • 10 minutes

Create a container image using Azure Container Registry Tasks

You use a Dockerfile to provide build instructions. Azure Container Registry Tasks enables you to reuse any Dockerfile currently in your environment, including multi-staged builds. For this example, you create a new Dockerfile that builds a Node.js application.

  1. Open the Cloud Shell editor and create a new file named Dockerfile using the code command.

    code Dockerfile

  2. Paste the following Dockerfile contents into the file.

    This Dockerfile uses the node:9-alpine image as its base image. It then adds the Node.js application files to the image and installs the application dependencies. Finally, it configures the container to serve the application on port 80 via the EXPOSE instruction.

    FROM    node:9-alpine
ADD     https://raw.githubusercontent.com/Azure-Samples/acr-build-helloworld-node/master/package.json /
ADD     https://raw.githubusercontent.com/Azure-Samples/acr-build-helloworld-node/master/server.js /
RUN     npm install
EXPOSE  80
CMD     ["node", "server.js"]

  3. Save the file and close the editor.

  4. Build the container image from the Dockerfile using the az acr build command.

    Note

    Make sure you add the period (.) to the end of the command. It represents the source directory containing the Dockerfile. Because we didn't specify the name of the file using the --file parameter, the command looks for a file called Dockerfile in our current directory.

    az acr build --registry $ACR_NAME --image helloacrtasks:v1 .

  5. Verify that the image has been created and stored in the registry using the az acr repository list command.

    az acr repository list --name $ACR_NAME --output table

    Your output should look similar to the following example output:

    Result
-------------
helloacrtasks