Building a Docker image is only part of the workflow. In real projects, you also need to tag the image correctly and push it to a registry so it can be deployed reliably.
Docker Hub is a common registry for public and private images, and the process is straightforward once you understand build, tag, and push as separate steps.
Build the image
docker build -t myapp:1.0 .Tag the image for a registry
docker tag myapp:1.0 yourname/myapp:1.0Push it to Docker Hub
docker login
docker push yourname/myapp:1.0Why tagging matters
Tags let you track versions and roll back safely. Avoid using only latest in production because it makes deployments harder to audit and repeat.
- Tag by version number when you release.
- Use commit-based tags for traceability.
- Keep your registry naming consistent.
- Document the exact push command in your team workflow.
Once your image is in the registry, you can deploy the same artifact across environments without rebuilding it. That is a major benefit for CI/CD pipelines and release reliability.
Related reading: our guide on Docker basics and Docker Compose.
FAQ
Do I need Docker Hub specifically? No, but Docker Hub is a common starting point and an easy place to learn the workflow.
Should I use semantic versioning? Yes, versioned tags make releases and rollbacks much easier to manage.
Can I push private images? Yes, if your registry plan supports private repositories.
Conclusion
Once you can build, tag, and push images confidently, you have the foundation for a solid container delivery pipeline.