adv-it-docker-notes.txt

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####### !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!#######
####### Use DOUBLE QUOTES in CMD line in Dockerfile!          #######
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sudo apt install apt-transport-https
#Нужная штука?

sudo systemctl status docker

sudo docker ps
#IF PERMISSION DENIED:
sudo usermod -aG docker $USER

#then
exit

docker images

docker run hello-world
docker images

docker search centos
docker pull centos:centos7

docker images

#check IP of host
ipconfig

#show ALL containers, including previously running containers.
docker ps -a

#run interactively, access container's port 8080 via 1234 port from outside.
docker run -it -p 1234:8080 centos:centos7
docker run -it -p 1234:8080 tomcat

#run as daemon
docker run -d -p 1234:8080 tomcat

#nginx
docker run -d -p 1237:8080 nginx

#remove images
#Won't work if image is used by running container
docker rmi tomcat

#remove container (not running, but blocking the removal of its image)
#(using container's ID)
docker rm 0efa14bd

#NOW TO DOCKERFILE_2
nano DOCKERFILE
# create dockerfile in current dir, then: 
# dot means "HERE" (current dir)
docker build -t vadim-centos-python-http:v1 .

#check
 docker images

docker run -d -p 8080:80 vadim-centos-python-http:v1

#create duplicate image with new tag
docker tag vadim-centos-python-http:v1 vadim-centos-python-http:copy

#LOGIN TO RUNNING DOCKER CONTAINER
# 0b8a3cccae12 is some RUNNING container!
# We login into it and run /bin/bash.
docker exec -it 0b8a3cccae12 /bin/bash
#Now we are in the internal container shell.

nano index.html
#inside container!
#make some changes inside container, then:
exit
#now we'va left running container's shell.

#Now let's make new image from modified container.
#0b8a3cccae12 - our running container with modified contents.
# We will create new image: vadim-centos-python-http:v2
docker commit 0b8a3cccae12 vadim-centos-python-http:v2

#check
docker images

docker run -d -p 8080:8888 vadim-centos-python-http:v2
#new container ID is 6abc3bef10