You can find a starter Azure DevOps Pipelines in our samples GitHub repository linked below; you are free to add your frontend build steps to the file.
https://github.com/UmbHost/GreenStack.CICD.Samples/tree/main/AzureDevOps
There are various samples for pushing to the below registries:
DockerHub
Azure Container Registry
GitLab Container Registry
GitHub Container Registry
AWS ECR
ProGet
Quay