docker compose build和docker build在复制文件时不共享层兑现

当我使用

docker compose build

构建多阶段docker构建时，docker层兑现不会转移到

docker build。

命令

在下面提供的日志中，您将看到

WORKDIR

命令使用docker层兑现，但

COPY

忽略它并创建新的哈希。（文件根本没有更改）

当我仅使用时，这不会发生

docker build

或

docker compose

build。 以下是构建的日志：

T02429:app$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
node                10                  9b9d314e0a86        7 hours ago         904MB
T02429:app$ docker-compose build test
Building test
Step 1/6 : FROM node:10 as base
 ---> 9b9d314e0a86
Step 2/6 : WORKDIR /usr/src/app
 ---> Running in fc2d962f4fd0
Removing intermediate container fc2d962f4fd0
 ---> 362c0b907170
Step 3/6 : COPY package.json ./
 ---> 7457757e0221
Step 4/6 : COPY yarn.lock ./
 ---> 8bb824d2d7cd
Step 5/6 : COPY jest.config.js ./
 ---> 584c78a1cce8
Step 6/6 : COPY src src
 ---> 8d7aac67a142

Successfully built 8d7aac67a142
Successfully tagged test_image:latest
T02429:app$ docker build -t full_build .
Sending build context to Docker daemon    255kB
Step 1/12 : FROM node:10 as base
 ---> 9b9d314e0a86
Step 2/12 : WORKDIR /usr/src/app
 ---> Using cache
 ---> 362c0b907170
Step 3/12 : COPY package.json ./
 ---> 48e89caded31
Step 4/12 : COPY yarn.lock ./
 ---> 58c942524315
Step 5/12 : COPY jest.config.js ./
 ---> 02b7f45d1d90
Step 6/12 : COPY src src
 ---> 708fe2761b39
Step 7/12 : FROM node:10 as prod
 ---> 9b9d314e0a86
Step 8/12 : WORKDIR /usr/src/app
 ---> Using cache
 ---> 362c0b907170
Step 9/12 : COPY --from=base /usr/src/app/package.json package.json
 ---> 542eacbc1285
Step 10/12 : COPY --from=base /usr/src/app/src src
 ---> c40cbe92f9ec
Step 11/12 : EXPOSE 3000
 ---> Running in 66473d8427c7
Removing intermediate container 66473d8427c7
 ---> f5b1b1deafab
Step 12/12 : CMD [ "echo", "hello world" ]
 ---> Running in a8c4609e7159
Removing intermediate container a8c4609e7159
 ---> 863470696544
Successfully built 863470696544
Successfully tagged full_build:latest

这是我的docker文件：

# The instructions for the first stage
FROM node:10 as base
WORKDIR /usr/src/app

COPY package.json ./
COPY yarn.lock ./
COPY jest.config.js ./
COPY src src

# The instructions for second stage
FROM node:10 as prod
WORKDIR /usr/src/app

COPY --from=base /usr/src/app/package.json package.json
COPY --from=base /usr/src/app/src src

EXPOSE 3000
CMD [ "echo", "hello world" ]

这是我的docker-compose.yml

version: '3.7'

services:
  web:
    image: web_image:latest
    build:
      context: .
      target: prod
  test:
    image: test_image:latest
    build:
      context: .
      target: base
    environment:
      - CI=true
    command: echo Hello