启动Dokku应用时，我无法尝试使用apt-get安装软件包。
快速背景
Buildpacks我正在使用Dokku，<the-app>/.buildpacks：
https://github.com/auricapps/heroku-buildpack-apt
https://github.com/heroku/heroku-buildpack-python
我要安装的软件包<the-app>/Aptfile：
libxml2-dev
libxmlsec1-dev
libxslt1-dev
pkg-config
python3-dev
zlib1g-dev
在疑难解答中，我注意到/etc/apt/sources.list和/etc/apt/sources.list.d中没有源存储库，所以我构建在Heroku Apt buildpack上以允许使用自定义源列表。 Here是自定义构建包，here是我通过添加sources.list来允许自定义Sourcefile所做的具体更改。
我包括的来源<the-app>/Sourcefile：
deb http://archive.ubuntu.com/ubuntu trusty main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty main restricted
deb http://archive.ubuntu.com/ubuntu trusty-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty-updates main restricted
deb http://archive.ubuntu.com/ubuntu trusty universe
deb-src http://archive.ubuntu.com/ubuntu trusty universe
deb http://archive.ubuntu.com/ubuntu trusty-updates universe
deb-src http://archive.ubuntu.com/ubuntu trusty-updates universe
deb http://archive.ubuntu.com/ubuntu trusty multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty multiverse
deb http://archive.ubuntu.com/ubuntu trusty-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-updates multiverse
deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu trusty-security main
deb-src http://security.ubuntu.com/ubuntu trusty-security main
deb http://security.ubuntu.com/ubuntu trusty-security universe
deb-src http://security.ubuntu.com/ubuntu trusty-security universe
问题：
但是，apt-get install仍然没有回复说它无法找到我要安装的软件包，仍然没有任何乐趣：
Counting objects: 127, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (117/117), done.
Writing objects: 100% (127/127), 18.22 KiB | 0 bytes/s, done.
Total 127 (delta 51), reused 0 (delta 0)
-----> Cleaning up...
-----> Building security-test from herokuish...
-----> Adding BUILD_ENV to build environment...
-----> Warning: Multiple default buildpacks reported the ability to handle this app. The first buildpack in the list below will be used.
Detected buildpacks: multi python
-----> Multipack app detected
remote: ownloading Buildpack: https://github.com/auricapps/heroku-buildpack-apt
=====> Detected Framework: Apt
-----> Found Sourcefile, temporarily using it as sources.list
...
remote: etching .debs for libxml2-dev
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package libxml2-dev
remote: etching .debs for libxmlsec1-dev
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package libxmlsec1-dev
remote: etching .debs for libxslt1-dev
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package libxslt1-dev
remote: etching .debs for pkg-config
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package pkg-config
remote: etching .debs for python3-dev
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package python3-dev
remote: etching .debs for zlib1g-dev
Reading package lists...
Building dependency tree...
remote: E: Unable to locate package zlib1g-dev
...
任何提示/帮助？非常感谢！
答案 0 :(得分：1)
仅使用自定义Dockerfile解决了问题。在某些时候，我会花更多的时间来了解使用dokku-apt buildpack的问题是什么。
FROM heroku/cedar:14
ARG secret_key
RUN curl https://github.com/gliderlabs/herokuish/releases/download/v0.3.26/herokuish_0.3.26_linux_x86_64.tgz \
--silent -L | tar -xzC /bin
RUN /bin/herokuish buildpack install \
&& ln -s /bin/herokuish /build \
&& ln -s /bin/herokuish /start \
&& ln -s /bin/herokuish /exec
COPY . /app
RUN bash /app/include/default_user.bash && rm -f /app/include/default_user.bash
RUN apt-get -qq -o dir::etc::sourcelist=/app/include/sources.list update \
&& apt-get -qq -o dir::etc::sourcelist=/app/include/sources.list -y --force-yes install \
libxml2-dev \
libxmlsec1-dev \
libxslt1-dev \
pkg-config \
python3-dev \
zlib1g-dev
ENV SECRET_KEY $secret_key
RUN /bin/herokuish buildpack build