我在flask中使用了这个dockerfile：

FROM python:3.8-slim-buster

WORKDIR /python-docker

COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt

COPY . .

CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]

它工作正常，在我的目录中，我有requirements.txt和一个非常简单的app.py文件：

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello_geek():
    return '<h1>Hello from Flask & Docker</h2>'

if __name__ == "__main__":
    app.run(debug=True)

我想把它作为一个无发行版镜像使用，所以我在这个dockerfile上构建：

FROM python:3.8-slim-buster as build-env

ADD / /app
WORKDIR /app

RUN pip3 install --upgrade pip
RUN pip install -r ./requirements.txt

FROM gcr.io/distroless/python3-debian10

COPY --from=build-env /app /app
COPY --from=build-env /usr/local/lib/python3.8/site-packages /usr/local/lib/python3.8/site-packages
WORKDIR /app

ENV PYTHONPATH=/usr/local/lib/python3.8/site-packages

CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]

编译时没有错误，但当我运行时：sudo docker run python-dockerdistro
我得到这个错误：/usr/bin/python3.7：无法打开文件'python3'：[错误2]没有该文件或目录
你知道如何解决这个错误吗？先谢谢你了