Docker Mastery: docker containers 2
Tags: udemy-docker
Udemy
Images vs. Container
- Images
- the application we want to run
- Containers
- an instance of that image running as a process
docker container run
-
start a new container from an image
- ex
docker container run --publish 80:80 nginx
-
Issue
- 我照著教學打出現 error
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container run --publish 80:80 nginx Unable to find image 'nginx:latest' locally latest: Pulling from library/nginx docker: no matching manifest for windows/amd64 10.0.18362 in the manifest list entries. See 'docker run --help'. -
docker container run –publish 80:80 nginx
- 下載 nginx image from Docker Hub
- 開啟一個新的 container 去跑剛剛下載的 image
- docker container run –publish 80:80 –detach nginx
- 在 background 執行
docker container ls
-
show running containers
docker ps(old way)
-
ex
-
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES e4289982b0b5 nginx "nginx -g 'daemon of…" 10 minutes ago Up 10 minutes 0.0.0.0:80->80/tcp gracious_shockley
-
docker stop <container id / name>
-
ex
-
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES e4289982b0b5 nginx "nginx -g 'daemon of…" 10 minutes ago Up 10 minutes 0.0.0.0:80->80/tcp gracious_shockley E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker stop e4289982b0b5
-
-
docker rm -f gracious_shockley
docker container ls -a
- listing all containers
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
90ed52e63e12 nginx "nginx -g 'daemon of…" 11 minutes ago Created adoring_wing
e4289982b0b5 nginx "nginx -g 'daemon of…" 18 minutes ago Removal In Progress gracious_shockley
-
自行命名 conainer name
- docker container run –publish 80:80 –detach –name create-your-name nginx
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container run --publish 80:80 --detach --name create-your-name nginx 4acbef2aa861817308fde86b2e90b413aa1f3223734d9d1ec8a7e6904342d2f5 E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 4acbef2aa861 nginx "nginx -g 'daemon of…" 10 seconds ago Up 8 seconds 0.0.0.0:80->80/tcp create-your-name 90ed52e63e12 nginx "nginx -g 'daemon of…" 15 minutes ago Created adoring_wing e4289982b0b5 nginx "nginx -g 'daemon of…" 23 minutes ago Removal In Progress gracious_shockley
看 container log
docker container logs <conatiner-name>
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container logs create-your-name
192.168.11.8 - - [11/Dec/2019:09:52:55 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
192.168.11.8 - - [11/Dec/2019:09:52:56 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
192.168.11.8 - - [11/Dec/2019:09:52:56 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
192.168.11.8 - - [11/Dec/2019:09:52:56 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
192.168.11.8 - - [11/Dec/2019:09:52:57 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
192.168.11.8 - - [11/Dec/2019:09:52:57 +0000] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36" "-"
remove containers
-
docker container rm <container-id> <container-id> <container-id> ... -
EX:
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4acbef2aa861 nginx "nginx -g 'daemon of…" 5 minutes ago Up 5 minutes 0.0.0.0:80->80/tcp create-your-name
90ed52e63e12 nginx "nginx -g 'daemon of…" 21 minutes ago Created adoring_wing
e4289982b0b5 nginx "nginx -g 'daemon of…" 29 minutes ago Removal In Progress gracious_shockley
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container rm 4ac 90e e42
90e
e42
Error response from daemon: You cannot remove a running container 4acbef2aa861817308fde86b2e90b413aa1f3223734d9d1ec8a7e6904342d2f5. Stop the container before attempting removal or force remove
-
這邊看到有一個(running container)沒移除有點像是防呆機制 怕你一次刪光光
-
force remove
docker container rm -f <container-id>
E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container rm -f 4ac 4ac E:\Udemy\Docker Mastery\Docker-Mastery-Commands>docker container ls CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
What happens in docker container run
- 先找 image locally
- 找不到 再去
Docker Hub抓 remote image repository - 抓最新 version
- create new container based on that image and prepares to start
- 給一個 docker engine 虛擬ip
- opens up port 80 on host and forwars to port 80 in container
- Starts container by using CMD in the image Dockerfile
- ex:
(change version of image) | docker container run --publish 8080:80 --name webhost -d nginx:1.1 nginx -T | | (change host listening port) (change CMD run on start)