Detailed installation and use of docker-compose

Docker Compose is a Docker tool for defining and running complex applications. With Docker Compose you no longer need to use shell scripts to start containers. (Configured via docker-compose.yml)

Installation of Docker Compose

Github Source

sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
# Add executable permissions to docker-compose sudo chmod +x /usr/local/bin/docker-compose

Daocloud Source

curl -L https://get.daocloud.io/docker/compose/releases/download/1.22.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
# Add executable permissions to docker-compose sudo chmod +x /usr/local/bin/docker-compose

Uninstalling Docker Compose

sudo rm /usr/local/bin/docker-compose

Check the version of Docker Compose

docker-compose --version

Configure Dockerfile

#Specify the base image and customize it FROM java:8

#Maintainer information MAINTAINER zhouzhaodong <[email protected]>

#Set the working directory WORKDIR /apps/demo

#Add demo-0.0.1-SNAPSHOT.jar to the container ADD demo-0.0.1-SNAPSHOT.jar demo-1.0.0.jar

#Execute in bash mode to make demo-1.0.0.jar accessible. #RUNCreate a new layer and execute these commands on it. After the execution is completed, commit the changes of this layer to form a new image.
RUN bash -c "touch /demo-1.0.0.jar"

#Declare the service port provided by the runtime container. This is just a declaration. The application will not open the service of this port at runtime because of this declaration. EXPOSE 8080

#Specify the container startup program and parameters <ENTRYPOINT> "<CMD>"
ENTRYPOINT ["java","-jar","demo-1.0.0.jar"]

Configure the docker-compose.yml file

# Version: '3.0'
services:
 demo:
  # build is used to specify the file path where the Dockerfile is located build: .
  # Mapping ports ports:
  - "8080:8080"
  volumes: #Specify a file directory to store container data.
  # $PWD represents the current path - $PWD/data:/var/lib/log

Common commands for docker-compose

build: #Build image without cache docker-compose build --no-cache;
up: # Build and start the container docker-compose up -d
down: # Delete all containers, mirror docker-compose down
restart: #Restart the container docker-compose build; docker-compose down; docker-compose up -d

Run the docker-compose command to build and run the image

First, create a new folder in the host machine to store the Dockerfile, docker-compose.yml and the jar package we created earlier.
First enter the directory and run the down command to delete all previously created images.
Run the build command to generate the image.
Run the up command to start the container.
Access the ip+port number and you can see our program.

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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