Docker notes extended

Docker notes extended

reformat.sh
export FORMAT="\nID\t{{.ID}}\nIMAGE\t{{.Image}}\nCOMMAND\t{{.Command}}\nCREATED\t{{.RunningFor}}\nSTATUS\t{{.Status}}\nPORTS\t{{.Ports}}\nNAMES\t{{.Names}}\n"

# this shell will only work on bash
# makes formatting vertical with FORMAT tag


COMMANDS:
https://docs.docker.com/engine/reference/commandline/docker/


DOCKERFILE:
FROM node

WORKDIR /usr/src/app

COPY package*.json ./

RUN npm install

COPY . .

EXPOSE 4000
CMD [ "npm", "start"]


BUILD DOCKER:
docker build -t jesse/simplebackend .


SHOW IMAGES:
docker images


REMOVE IMAGES:
docker rmi ******


RUN IMAGE:
docker run -p 4000:4000 jesse/simplebackend

RUN WITH TERMINAL INTERACTIVE:
docker run -ti

DELETE CONTAINER AFTER MAIN PROCESS:
docker run -rm *container* *cmd*


DELETE CONTAINER AFTER MULTIPLE PROCESSES:
docker run -ti *container* bash -c "*cmd*, *cmd*"
docker run -ti ubuntu bash -c "sleep 3; echo all done"

RUN IN BACKGROUND:
docker run -d -ti ubuntu bash

RUN CONTAINER WITH LIMITED MEMORY:
docker run --memory maximum-allowed-memory ******** *cmd*

RUN CONTAINER WITH RESTRICTED CPU:
docker run --cpu-shares
docker run --cpu-quota


ECHO-SERVER:
docker run --rm -ti -p 45678:45678 -p 45679:45679 --name echo-server ubuntu:14.04 bash
nc -lp 45678 | nc -lp 45679

(with netcat locally installed)
IN DIFFERENT SHELL:
nc localhost 45678

IN OTHER DIFFERENT SHELL:
nc localhost 45679

BACK IN FIRST DIFFERENT SHELL (TYPE):
here's some data
[IT SHOULD NOW APPEAR IN THE OTHER SHELL]

(without netcat locally installed)
IN DIFFERENT SHELL:
docker run --rm -ti ubuntu:14.04 bash
nc *computer's IP* 45678

IN OTHER DIFFERENT SHELL:
docker run --rm -ti ubuntu:14.04 bash
nc *computer's IP* 45679

BACK IN FIRST DIFFERENT SHELL (TYPE):
here's some data
[IT SHOULD NOW APPEAR IN THE OTHER SHELL]


GO IN TO DIAGNOSE:
docker exec -ti ********* bash


GO INTO CONTAINER:
docker attach ************
LEAVE CONTAINER BUT KEEP IT RUNNING:
ctrl+p, ctrl+q
LEAVE CONTAINER AND CLOSE IT:
ctrl+d


SEE WHAT IS RUNNING:
docker ps
docker ps --format $FORMAT
SEE LAST CONTAINER AND WHAT HAPPENED TO IT:
docker ps -l --format=$FORMAT


STOP CONTAINER:
docker stop *****


START CONTAINER:
docker start *****


SEND TO DOCKERHUB:
docker push *****


GET FROM DOCKERHUB:
docker pull mongo


DOCKER-COMPOSE.YML:
app:
  container_name: app
  restart: always
  build: .
  ports:
    - "4000:4000"
  links:
    - mongo
mongo:
  container_name: mongo
  image: mongo
  expose:
    - "27017"
  volumes:
    - ./data:/data/db
  ports:
    - "27017:27017"


BUILD FROM DOCKER-COMPOSE:
docker-compose build


TO BUILD AND RUN:
docker-compose up

RUN IN BACKGROUND:
docker-compose up -d


***RECOMMENDED TO BRING THEM UP ONE AT A TIME***
TO RUN A CONTAINER FIRST:
docker-compose up -d *container_name*
COULD ALSO JUST USE "depends-on"?


CHECK LOGS FOR CONTAINER:
docker logs *****


STOP DOCKER CONTAINER:
docker kill *********


REMOVE DOCKER CONTAINER PERMANENTLY:
docker rm *********


STOP DOCKER-COMPOSE:
docker-compose stop


REMOVE *ALL* DOCKER CONTAINERS:
docker system prune


MAKE NEW IMAGE FROM CONTAINER:
docker commit ********
GIVE IT A NAME:
docker tag ************ image-name-goes-here
DO BOTH:
docker commit *container* *new-image-name*




docker network --help

docker inspect *********


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