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Docker-composer usage practices

Dockerfile allows users to manage a separate application container; Docker-composer allows users to define a set of associated application containers (called a project) in a template (YAML format)

For example, a Web service container plus a database service container on the back end

Creating a File Directory

ghost
  - ghost
    - Dockfile    
  - nginx
      - nginx.conf
      - Dockfile
  - data
  - docker-compose.yml
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Docker – composer. Yaml formats

ghost-app:
    build:ghost
    depends_on:
        - db
    ports:
        - "2368:2368"
nginx:
     build:nginx
     ports:
         - "80:80"
     depends_on:
         - ghost-app
db:
    image: "Mysql: 5.7.15"
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Configuration ghost Dockerfile

FROM ghost
COPY ./config.js /var/lib/ghost/config.js
EXPOSE 2368
CMD ["npm", "start", "--production"]
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config.js

nginx Dockerfile

FROM nginx
COPY nginx.conf /etc/nginx/nginx.conf
EXPOSE 80
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nginx.conf

worker processes 4; events {worker connections 1024; } http { server { listen 80; location / { proxy pass http://ghost-app:2368; }}}Copy the code

ghost docker-compare.yaml

The database-related configurations must be consistent with those in config.js. Db. volumes: $PWD/data:/var/lib/mysql

Ghost directory:

Docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up -d: docke-compose up

Error 502 Bad Gateway is displayed

Indicates that nginx is started, but the link between nginx and ghost-app is incorrect.

Check:

1. docker-compose.yaml
2. nginx.conf

Docker-compose stop 2 Docker-compose RM 3: Docker-compose rm 3: docker-compose RM 3: Docker-compose RM Docker-compose build 4: docker-compose build 4: docker-compose build 4: docker-compose build 4: docker-compose build 4: docker-compose build 4: docker-compose build 4: docker-compose build Start the container docker-compose up -d 5 with the image. Docker-compose: docker-compose: docker-compose: docker-compose: Docker-compose: Docker-compose: Docker-compose: Docker-compose: Docker-compose Access localhost/ghost/setup/one is configuredCopy the code

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