Docker

• docker pull http://resgistory.redhat.com/rhel/httpd:latest
• docker run -d --name
• docker -p 8080:8888
• docker ps -a;
• docker top;
• docker logs ;
• docker exec -it /bin/bash/;
• docker container
• docker-compose -f docker-compose.yml up
• docker network create ;
• docker network ls;
• docker run -d --name --net -p 8080:8888

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DockerFile

• FROM - Notifying Base Image
• ENV - defining env variable
• RUN - any linux command
• COPY - COPY . /app, executes on base → container
• EXPOSE - port
• WORKDIR - move to directory
• CMD - [“java”,”filename.java”] → ENTRYPOINT command
• docker build -t . [or]
• docker build - < Dockerfile

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ENTRYPOINT vs DOCKER

• While running a container ,
• we can add something like “echo world” in docker run,
• this will add a CMD:[“echo”,”world”] in docker inspect,
• as well as a Args:[“echo”,”1”,“echo”,”world”].
• ENTRYPOINt args are appended, not overridden by default