[Docker] Docker Image1

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Docker Image1

• Docker Image & Layers
• Docker Image Tagging & Pushing to Docker Hub

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Docker Image & Layers

# show history of image layers (docker image history [image_name])
docker image history nginx:latest

# returns JSON metadata about the image (docker image inspect [image_name])
docker image inspect nginx

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Docker Image Tagging & Pushing to Docker Hub

# assigns one or more tags to an image (docker image tag [source_image[:tag]] [target_image[:tag]]
docker image tag nginx zsu/nginx

# login to docker hub
docker login

# can check docker profile
cat .docker/config.json

# push to dockerhub (docker image push [user]/[image_name]:[tag])
docker image push zsu/nginx:testing

# login to docker hub stores authentication key, so don't forget to logout to protect your account
docker logout

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