使用Docker和Docker Compose时,Cypress无法验证此服务器是否正在运行
我目前有三个docker容器在运行:使用Docker和Docker Compose时,Cypress无法验证此服务器是否正在运行,docker,testing,docker-compose,dockerfile,cypress,Docker,Testing,Docker Compose,Dockerfile,Cypress,我目前有三个docker容器在运行: 前端web应用程序的Docker容器(暴露在端口8080上) 后端服务器的Docker容器(在端口5000上公开) 我的MongoDB数据库的Docker容器 这三个容器都工作得很好,当我访问时,我可以毫无问题地与我的web应用程序交互 我正在尝试设置第四个Cypress容器,它将为我的应用程序运行端到端测试。不幸的是,此Cypress容器在尝试运行my Cypress测试时抛出以下错误: cypress | Cypress could not verify
cypress | Cypress could not verify that this server is running:
cypress |
cypress | > http://localhost:8080
cypress |
cypress | We are verifying this server because it has been configured as your `baseUrl`.
cypress |
cypress | Cypress automatically waits until your server is accessible before running tests.
cypress |
cypress | We will try connecting to it 3 more times...
cypress | We will try connecting to it 2 more times...
cypress | We will try connecting to it 1 more time...
cypress |
cypress | Cypress failed to verify that your server is running.
cypress |
cypress | Please start this server and then run Cypress again.
第一个潜在问题(我已解决)
第一个潜在问题是这样描述的,即当Cypress启动时,我的应用程序还没有准备好开始响应请求。但是,在我的Cypress Dockerfile中,在运行Cypress命令之前,我目前正在睡眠10秒钟,如下所示。这10秒钟已经足够了,因为在执行npm run-cypress-run-chrome
命令之前,我可以从web浏览器访问我的web应用程序。我知道Cypress有一些更好的解决方案可以等待,但现在,我确信我的应用程序已经准备好让Cypress开始执行测试了
ENTRYPOINT sleep 10; npm run cypress-run-chrome
第二个潜在问题(我已解决)
第二个潜在问题是这样描述的,即Docker容器的/etc/hosts
文件不包含以下行。我也纠正了这个问题,但它似乎不是问题所在
127.0.0.1 localhost
有人知道为什么我的Cypress Docker容器似乎无法连接到我的web应用程序,而我可以通过我的web浏览器访问该应用程序吗?
下面是我的Cypress容器的Dockerfile
正如前面提到的,cypress/included映像已经有了一个现有的入口点。因为我想在运行package.json文件中指定的自己的Cypress命令之前先休眠10秒钟,所以我在Dockerfile中覆盖了ENTRYPOINT,如下所示
FROM cypress/included:3.4.1
COPY hosts /etc/
WORKDIR /e2e
COPY package*.json ./
RUN npm install --production
COPY . .
ENTRYPOINT sleep 10; npm run cypress-run-chrome
下面是my package.json文件中对应于npm run-cypress-run-chrome
的命令
"cypress-run-chrome": "NODE_ENV=test $(npm bin)/cypress run --config video=false --browser chrome",
下面是我的docker-compose.yml文件,它协调了所有4个容器。
version: '3'
services:
web:
build:
context: .
dockerfile: ./docker/web/Dockerfile
container_name: web
restart: unless-stopped
ports:
- "8080:8080"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
depends_on:
- server
environment:
- NODE_ENV=testing
networks:
- app-network
db:
build:
context: .
dockerfile: ./docker/db/Dockerfile
container_name: db
restart: unless-stopped
volumes:
- dbdata:/data/db
ports:
- "27017:27017"
networks:
- app-network
server:
build:
context: .
dockerfile: ./docker/server/Dockerfile
container_name: server
restart: unless-stopped
ports:
- "5000:5000"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
networks:
- app-network
depends_on:
- db
command: ./wait-for.sh db:27017 -- nodemon -L server.js
cypress:
build:
context: .
dockerfile: Dockerfile
container_name: cypress
restart: unless-stopped
volumes:
- .:/e2e
depends_on:
- web
networks:
- app-network
networks:
app-network:
driver: bridge
volumes:
dbdata:
node_modules:
127.0.0.1 localhost
{
"baseUrl": "http://localhost:8080",
"integrationFolder": "cypress/integration",
"fileServerFolder": "dist",
"viewportWidth": 1200,
"viewportHeight": 1000,
"chromeWebSecurity": false,
"projectId": "3orb3g"
}
下面是复制到Cypress Docker容器中的“我的主机”文件的外观。
version: '3'
services:
web:
build:
context: .
dockerfile: ./docker/web/Dockerfile
container_name: web
restart: unless-stopped
ports:
- "8080:8080"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
depends_on:
- server
environment:
- NODE_ENV=testing
networks:
- app-network
db:
build:
context: .
dockerfile: ./docker/db/Dockerfile
container_name: db
restart: unless-stopped
volumes:
- dbdata:/data/db
ports:
- "27017:27017"
networks:
- app-network
server:
build:
context: .
dockerfile: ./docker/server/Dockerfile
container_name: server
restart: unless-stopped
ports:
- "5000:5000"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
networks:
- app-network
depends_on:
- db
command: ./wait-for.sh db:27017 -- nodemon -L server.js
cypress:
build:
context: .
dockerfile: Dockerfile
container_name: cypress
restart: unless-stopped
volumes:
- .:/e2e
depends_on:
- web
networks:
- app-network
networks:
app-network:
driver: bridge
volumes:
dbdata:
node_modules:
127.0.0.1 localhost
{
"baseUrl": "http://localhost:8080",
"integrationFolder": "cypress/integration",
"fileServerFolder": "dist",
"viewportWidth": 1200,
"viewportHeight": 1000,
"chromeWebSecurity": false,
"projectId": "3orb3g"
}
下面是我的cypress.json文件的样子。
version: '3'
services:
web:
build:
context: .
dockerfile: ./docker/web/Dockerfile
container_name: web
restart: unless-stopped
ports:
- "8080:8080"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
depends_on:
- server
environment:
- NODE_ENV=testing
networks:
- app-network
db:
build:
context: .
dockerfile: ./docker/db/Dockerfile
container_name: db
restart: unless-stopped
volumes:
- dbdata:/data/db
ports:
- "27017:27017"
networks:
- app-network
server:
build:
context: .
dockerfile: ./docker/server/Dockerfile
container_name: server
restart: unless-stopped
ports:
- "5000:5000"
volumes:
- .:/home/node/app
- node_modules:/home/node/app/node_modules
networks:
- app-network
depends_on:
- db
command: ./wait-for.sh db:27017 -- nodemon -L server.js
cypress:
build:
context: .
dockerfile: Dockerfile
container_name: cypress
restart: unless-stopped
volumes:
- .:/e2e
depends_on:
- web
networks:
- app-network
networks:
app-network:
driver: bridge
volumes:
dbdata:
node_modules:
127.0.0.1 localhost
{
"baseUrl": "http://localhost:8080",
"integrationFolder": "cypress/integration",
"fileServerFolder": "dist",
"viewportWidth": 1200,
"viewportHeight": 1000,
"chromeWebSecurity": false,
"projectId": "3orb3g"
}
Docker中的
localhost
始终是“此容器”。使用docker-compose.yml中服务块的名称作为主机名,即
(请注意,我从评论中复制了David Maze的答案)
localhost
在Docker中始终是“this container”。您可以使用docker compose.yml
中服务块的名称作为主机名<代码>http://web:8080@DavidMaze是的,这绝对是个问题。如果你把它写成解决方案,我很乐意接受它作为答案。我想这个问题和解决方案会对像我这样的Docker新手有所帮助。我面临着同样的问题,我知道问题是什么,但解决方案是什么?docker-compose.yml文件中要编辑的内容,以便cypress的本地主机指向web的本地主机。@Chromeium->使用docker-compose.yml中服务块的名称作为主机名,即。,