Docker

What is a container

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Container vs VM

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Docker image

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Docker container

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Dockerfile

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docker build

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docker run

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docker ps

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docker pull

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docker push

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Docker Hub

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Image layers

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FROM

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RUN

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CMD vs ENTRYPOINT

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COPY vs ADD

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WORKDIR

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EXPOSE

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ENV

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LABEL

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USER

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ARG vs ENV

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Layer cache

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Order for cache

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Multi-stage build

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.dockerignore

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Small base image

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Volume purpose

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Bind mount

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Ephemeral fs

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Port mapping

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Container networks

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Env at runtime

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docker exec

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docker logs

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Restart policy

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Stop signal

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Docker Compose

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compose up

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Compose service

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Compose depends_on

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Tagging

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latest tag

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Image scanning

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Root in container

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Least privilege caps

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Read-only fs

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Secrets in image

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Container isolation

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cgroups

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namespaces

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OCI

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containerd

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Stateless containers

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12-factor config

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Healthcheck

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prune

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Copy on write

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Registry auth

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Base image trust

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