Docker-compose 不反射(reflect) requirements.txt 中的更改

Question

我的变化 requirements.txt当我运行时没有被反射(reflect):

docker-compose -f docker-compose-dev.yml up -d

docker-compose-dev.yml

version: '3.6'

services:

  web:
    build:
      context: ./services/web
      dockerfile: Dockerfile-dev
    volumes:
      - './services/web:/usr/src/app'
    ports:
      - 5001:5000
    environment:
      - FLASK_ENV=development
      - APP_SETTINGS=project.config.DevelopmentConfig
      - DATABASE_URL=postgres://postgres:postgres@web-db:5432/web_dev 
      - DATABASE_TEST_URL=postgres://postgres:postgres@web-db:5432/web_test  
    depends_on:  
      - web-db

  web-db:  
    build:
      context: ./services/web/project/db
      dockerfile: Dockerfile
    ports:
      - 5435:5432
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres

  nginx:
    build:
      context: ./services/nginx
      dockerfile: Dockerfile-dev
    restart: always
    ports:
      - 80:80
    depends_on:
      - web
      - client

  client:
    build:
      context: ./services/client
      dockerfile: Dockerfile-dev
    volumes:
      - './services/client:/usr/src/app'
      - '/usr/src/app/node_modules'
    ports:
      - 3007:3000
    environment:
      - NODE_ENV=development
      - REACT_APP_WEB_SERVICE_URL=${REACT_APP_WEB_SERVICE_URL}
    depends_on:
      - web

Dockerfile-dev

# base image
FROM python:3.6-alpine

# install dependencies
RUN apk update && \
    apk add --virtual build-deps gcc python-dev musl-dev && \
    apk add libffi-dev && \
    apk add postgresql-dev && \
    apk add netcat-openbsd && \
    apk add bind-tools && \
    apk add --update --no-cache g++ libxslt-dev && \
    apk add jpeg-dev zlib-dev

ENV PACKAGES="\
    dumb-init \
    musl \
    libc6-compat \
    linux-headers \
    build-base \
    bash \
    git \
    ca-certificates \
    freetype \
    libgfortran \
    libgcc \
    libstdc++ \
    openblas \
    tcl \
    tk \
    libssl1.0 \
    "

ENV PYTHON_PACKAGES="\
    numpy \
    matplotlib \
    scipy \
    scikit-learn \
    nltk \
    " 

RUN apk add --no-cache --virtual build-dependencies python3 \
    && apk add --virtual build-runtime \
    build-base python3-dev openblas-dev freetype-dev pkgconfig gfortran \
    && ln -s /usr/include/locale.h /usr/include/xlocale.h \
    && python3 -m ensurepip \
    && rm -r /usr/lib/python*/ensurepip \
    && pip3 install --upgrade pip setuptools \
    && ln -sf /usr/bin/python3 /usr/bin/python \
    && ln -sf pip3 /usr/bin/pip \
    && rm -r /root/.cache \
    && pip install --no-cache-dir $PYTHON_PACKAGES \
    && pip3 install 'pandas<0.21.0' \
    && apk del build-runtime \
    && apk add --no-cache --virtual build-dependencies $PACKAGES \
    && rm -rf /var/cache/apk/*

# set working directory
WORKDIR /usr/src/app

# add and install requirements
COPY ./requirements.txt /usr/src/app/requirements.txt  # <--- refer to EDIT
RUN pip install -r requirements.txt

# add entrypoint.sh
COPY ./entrypoint.sh /usr/src/app/entrypoint.sh

RUN chmod +x /usr/src/app/entrypoint.sh

# add app
COPY . /usr/src/app

# run server
CMD ["/usr/src/app/entrypoint.sh"]

我错过了什么？

编辑

就像在 [ Docker how to run pip requirements.txt only if there was a change? 中接受的答案一样，我已经在复制 requirements.txt在将整个应用程序添加到图像之前，在单独的构建步骤中创建文件，但它似乎不起作用。

Answer 1

我认为问题可能是$ docker-compose up如果您进行更改，单独不会重建您的图像。为了得到docker-compose包括您对 requirements.txt 的更改您需要通过 --build标志到 docker-compose .

即改为运行:
docker-compose -f docker-compose-dev.yml up --build -d
这将强制 docker-compose重建图像。但是，这将重建 docker-compose 中的所有图像。可能需要也可能不需要的文件。

如果你只想重建单个服务的镜像，你可以先运行 docker-compose -f docker-compose-dev.yml build web ，然后运行你原来的 docker-compose命令。

更多信息 build命令 here .