- A note shared with my colleague.
- This was written in 2018. Some settings may be deprecate.
先說目前用到的(根據我們team的需求）
- 省時：重啟一個Container比重啟VM快速。
- 可標準化：根據同一份DockerFile建置的檔案即可產生同樣的image，不需要人工設定環境參數，減少出錯的機率，也使部署可程式化。
- 容易移植：同樣的image可以跑在任何有架設docker的環境中。
- 部署位置：Azure虛擬機，docker-test
- DNS：ta543dockerhub.southeastasia.cloudapp.azure.com
- OS：Ubuntu(Xenial) 16.04
- 帳號密碼：於Azure Portal虛擬機器管理頁面中的重設密碼，可新增一個sudo user
- in case anyone who is not familiar with linux cmd.
ssh {user name}@{ip or DNS name}
參考：https://docs.docker.com/install/linux/docker-ce/ubuntu/
參考：https://docs.docker.com/compose/install/
docker run hello-world
- output:
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
ca4f61b1923c: Pull complete
Digest: sha256:ca0eeb6fb05351dfc8759c20733c91def84cb8007aa89a5bf606bc8b315b9fc7
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
...
docker container ls --all
- if the docker run successully
CONTAINER ID IMAGE COMMAND CREATED STATUS
54f4984ed6a8 hello-world "/hello" 20 seconds ago Exited (0) 19 seconds ago
- 利用設定檔docker file將所需的環境參數寫入
- take a node.js app as an example
- the sample file is
dockerfile-sample
- 上傳專案原始檔，含DockerFile到虛擬機 (We should build a pipeline instead of manually upload.)
- 對資料夾下建置指令
docker build -t {別名} {資料夾路徑}
# ex:
docker build -t friendlyhello .
# check if it build successfully
docker image ls
- output
REPOSITORY TAG IMAGE ID
friendlyhello latest 326387cea398
- 啟動image
docker run -p {內部port}:{外部port} {別名或IMAGE ID}
# ex:
docker run -p 4000:80 friendlyhello
# check running containers
docker container ls
# check log
docker logs {別名或IMAGE ID}
- 如果是個網站也可以用curl呼叫
curl http://localhost:4000 - 在背景中執行則加上-d
docker run -p 4000:80 friendlyhello -d
- stop container
docker stop {別名或IMAGE ID}
- 上傳 image到registry
- todo: build our private registry
當服務由多個Container組成時，可以利用docker-compose一次將所有的image建置、啟動。
設定檔docker-compose.yml中也可以定義揭露的port、Container之間的相依性、來源檔案等等。
docker-compose-sample.yml有詳盡的註解
docker-compose up
# or
docker-compose up -d
# build only
docker-compose build
docker-compose stop
## List Docker CLI commands
docker
docker container --help
## Display Docker version and info
docker --version
docker version
docker info
## Execute Docker image
docker run hello-world
## List Docker images
docker image ls
## List Docker containers (running, all, all in quiet mode)
docker container ls
docker container ls --all
docker container ls -aq
## loggin a running docker
docker exec -it <image id> bash
docker build -t friendlyhello . # Create image using this directory's Dockerfile
docker run -p 4000:80 friendlyhello # Run "friendlyname" mapping port 4000 to 80
docker run -d -p 4000:80 friendlyhello # Same thing, but in detached mode
docker container ls # List all running containers
docker container ls -a # List all containers, even those not running
docker container stop <hash> # Gracefully stop the specified container
docker container kill <hash> # Force shutdown of the specified container
docker container rm <hash> # Remove specified container from this machine
docker container rm $(docker container ls -a -q) # Remove all containers
docker image ls -a # List all images on this machine
docker image rm <image id> # Remove specified image from this machine
docker image rm $(docker image ls -a -q) # Remove all images from this machine
docker login # Log in this CLI session using your Docker credentials
docker tag <image> username/repository:tag # Tag <image> for upload to registry
docker push username/repository:tag # Upload tagged image to registry
docker run username/repository:tag # Run image from a registry
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