從 repo 安裝 pip 時如何使 Dockerfile 緩存無效

Question

I have a Dockerfile that needs to install the latest package code from a private git repo, however because the dockerfile/url/commit doesn't change (I just follow the latest in master), Docker will cache this request and won't pull最新的代碼。

我可以完全禁用構建緩存來解決問題 - 但這會導致構建緩慢。

我怎樣才能強制 docker 不為一個命令使用緩存？

FROM tiangolo/uvicorn-gunicorn-fastapi:python3.7

COPY ./requirements.txt /app

RUN pip install --upgrade pip
RUN pip install -r requirements.txt

# This needs to be separate to trigger to invalidate the build cache
RUN pip install -e git+https://TOKEN@github.com/user/private-package.git#egg=private_package

COPY ./main.py /app
COPY ./app /app/app

Answer 1

添加

ARG foo=bar

在RUN pip install -e...在您的 docker 文件中。 然后在您的腳本中使用docker build....添加作為參數--build-arg foo="$(date -s)"