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How to publish an image to a repository (for now docker hub)
See also: Docker - Continuous integration
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Code
docker login
docker build -t yourDockerHubId/imageName:tag .
docker push yourDockerHubId/imageName:tag
Example
For an image name as dockiql and my docker hub id as gerardnico
docker login
docker build -t gerardnico/dockiql:1.0.0 .
docker push yourDockerHubId/imageName:tag