docker - App Engine灵活环境-镜像构建时跳过Dockerfile软件包安装

Question

在App Engine灵活环境中构建自定义运行时时，我试图安装软件包的Dockerfile中的行似乎被跳过了。特别是这两个:

RUN add-apt-repository ppa:ubuntugis/ppa

RUN sudo apt-get install -y gdal-bin

终端显示gcloud app deploy命令通过拉动python运行时开始，然后跳过处理Dockerfile直到此行:

RUN virtualenv /env -p python3.7

这是我的整个Dockerfile。当应用程序尝试启动时，它失败了，因为它找不到我尝试安装的GDAL软件包安装。

FROM ubuntu:bionic


RUN add-apt-repository ppa:ubuntugis/ppa

RUN sudo apt-get install -y gdal-bin


# Create a virtualenv for dependencies. This isolates these packages from
# system-level packages.
# Use -p python3 or -p python3.7 to select python version. Default is version 2.
RUN virtualenv /env -p python3.7



# Setting these environment variables are the same as running
# source /env/bin/activate.
ENV VIRTUAL_ENV /env
ENV PATH /env/bin:$PATH

# Copy the application's requirements.txt and run pip to install all
# dependencies into the virtualenv.
RUN pip install -r requirements.txt

# Add the application source code.
ADD . /


# Run a WSGI server to serve the application. gunicorn must be declared as
# a dependency in requirements.txt.
CMD gunicorn -b :$PORT main:app

Answer 1

根据您的Dockerfile，Cloud Build不应拉Python运行时，而应拉ubuntu:bionic图像。部署非自定义Flex应用程序时，Cloud Build将拉动Python运行时。

我相信您需要在app.yaml文件中设置适当的运行时，如下所示:

runtime: custom
env: flex
...

而不是 runtime:python。

另外，在尝试使用 Dockerfile进行测试后，我注意到了两个问题:

似乎add-apt-repository图像上默认不提供ubuntu:bionic，我必须手动安装它。

您无法在Dockerfile中运行sudo

因此，您的Dockerfile如下所示:

FROM ubuntu:bionic

RUN apt-get update && apt-get install software-properties-common -y
RUN add-apt-repository ppa:ubuntugis/ppa

RUN apt-get install -y gdal-bin
...