how to decreese docker images

P.S: try to search alphine images

to read service logs:

docker logs docker_api_db_1(name of your service) ...

docker images

some dockerfile with seetings that was loaded from hub.docker.com

how to go into docker container and run some command there:

docker ps to show list of containers
take docker container name and run: docker exec -it {docker-container-name} sh
then you can run any shell command, cd/ls ....

all services inside docker communicate between each other not via localhost!!!

it communicate as example: http://auth:3002/api

http:// mandatory part,
service name auth
port that was given for communacation
routes that opened for api methods (opened into server reponse files get|post requests)

show docker images ids

docker ps -aq and if we want remove all containers from previous command:
docker rm $(docker ps -aq) remove docker image after some solved some command
docker run --rm [some image name f.e: ubuntu:16.04] echo "hellow world" then after printing "hellow world" container will be removed

if we want to remove all images (by analogy with containers)

docker images -q, show all images id
docker rmi $(docker images -q)