docker-compose, failed to solve: rpc error: code = Unknown desc = failed to compute cache key: "/app/package.json" not found: not found

Question

我遇到路径 docker-compose 的问题，当我尝试仅使用 docker build 构建项目时，效果很好，但我不能使用 docker build，我必须使用docker-compose。当我使用 docker-compose 它 returns 2 错误在步骤 3/5 => ERROR [3/5] COPY /app/package.json . 和步骤 5/5 => ERROR [5/5] COPY /app .:

PS C:\Users\mamba\Desktop\project-practice> docker-compose -f docker/docker-compose.yml up -d
[+] Building 1.4s (9/9) FINISHED
 => [internal] load build definition from Dockerfile                                                                                                          0.1s 
 => => transferring dockerfile: 31B                                                                                                                           0.0s 
 => [internal] load .dockerignore                                                                                                                             0.1s 
 => => transferring context: 34B                                                                                                                              0.0s 
 => [internal] load metadata for docker.io/library/node:latest                                                                                                1.0s 
 => [1/5] FROM docker.io/library/node@sha256:c3356b2b11ad643852a321308c15d70ca2bc106e40d3ffe7a4879d3588a9d479                                                 0.0s 
 => [internal] load build context                                                                                                                             0.1s 
 => => transferring context: 2B                                                                                                                               0.0s 
 => CACHED [2/5] WORKDIR /app                                                                                                                                 0.0s 
 => ERROR [3/5] COPY /app/package.json .                                                                                                                      0.0s 
 => CACHED [4/5] RUN npm install                                                                                                                              0.0s 
 => ERROR [5/5] COPY /app .                                                                                                                                   0.0s 
------
 > [3/5] COPY /app/package.json .:
------
------
 > [5/5] COPY /app .:
------
failed to solve: rpc error: code = Unknown desc = failed to compute cache key: "/app/package.json" not found: not found

这是我的项目结构 http://skrinshoter.ru/s/080721/upY64zwf

这是我的 Dockerfile

FROM node
WORKDIR /app
COPY /app/package.json .
RUN npm install
COPY /app .
EXPOSE 3000
CMD ["npm", "start"]

这是我的docker-compose.yml

version: "3.8"
services: 
    react-app:
        working_dir: /app
        build: 
            dockerfile: Dockerfile
        ports: 
            - "3000:3000"
        volumes: 
            - ./app/src:/app/src
        environment: 
            - CHOKIDAR_USEPOLLING=true
        # env_file: 
        #     - ./docker/.env

如果我将文件结构中的 docker-compose.yml 移动到 project-practice，它工作得很好，它构建并且服务器启动，但我必须保持文件夹结构和这样的文件。

|-project-practice
|-app
|  |...
|-docker
   |...

Answer 1

因此，如果您的 yml 是嵌套的，您需要使用 ../app/src:/app/src 而不是 ./app/src:/app/src，因为它是 yml 的相对位置。

Answer 2

看起来你安装的卷有误。从以下位置更改 docker-compose 配置：

build: 
     dockerfile: Dockerfile
volumes:
     - ./app/src:/app/src

您只安装了 SRC 文件夹，但您需要它之外的文件。您还需要将上下文添加到 docker 文件

至：

build: 
     context: ../
     dockerfile: /docker/Dockerfile
volumes:
     - ../app:/app

路径应该相对于 docker-compose 文件位置。

另外需要修改Dockerfile：

FROM node
WORKDIR /app
COPY /app/package.json .
RUN npm install
COPY /app .
EXPOSE 3000
CMD ["npm", "start"]

docker-compose, failed to solve: rpc error: code = Unknown desc = failed to compute cache key: "/app/package.json" not found: not found

docker-compose, failed to solve: rpc error: code = Unknown desc = failed to compute cache key: "/app/package.json" not found: not found

frontend

backend

docker

reactjs

docker-compose