Add Docker instructions for older branches

If you've upgraded away from Ubuntu 14.04 Trusty, you may find that
older branches (or certain code) doesn't build anymore. These
instructions can form a starting point to build these older branches
within Docker.

Bug: 72993575
Test: Follow instructions, build marshmallow-dev
Test: Follow instructions, build lollipop-mr1-dev
Change-Id: If4047b1bb5324d75a9d0947cb5280ff1cabccb6a
This commit is contained in:
Dan Willemsen 2018-02-15 17:40:10 -08:00
parent 304be2ec74
commit 6dc4621afc
3 changed files with 44 additions and 0 deletions

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gitconfig

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FROM ubuntu:14.04
ARG userid
ARG groupid
ARG username
RUN apt-get update && apt-get install -y git-core gnupg flex bison gperf build-essential zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache libgl1-mesa-dev libxml2-utils xsltproc unzip python openjdk-7-jdk
RUN curl -o jdk8.tgz https://android.googlesource.com/platform/prebuilts/jdk/jdk8/+archive/master.tar.gz \
&& tar -zxf jdk8.tgz linux-x86 \
&& mv linux-x86 /usr/lib/jvm/java-8-openjdk-amd64 \
&& rm -rf jdk8.tgz
RUN curl -o /usr/local/bin/repo https://storage.googleapis.com/git-repo-downloads/repo \
&& echo "e147f0392686c40cfd7d5e6f332c6ee74c4eab4d24e2694b3b0a0c037bf51dc5 /usr/local/bin/repo" | sha256sum --strict -c - \
&& chmod a+x /usr/local/bin/repo
RUN groupadd -g $groupid $username \
&& useradd -m -u $userid -g $groupid $username \
&& echo $username >/root/username \
&& echo "export USER="$username >>/home/$username/.gitconfig
COPY gitconfig /home/$username/.gitconfig
RUN chown $userid:$groupid /home/$username/.gitconfig
ENV HOME=/home/$username
ENTRYPOINT chroot --userspec=$(cat /root/username):$(cat /root/username) / /bin/bash -i

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The Dockerfile in this directory sets up an Ubuntu Trusty image ready to build
a variety of Android branches (>= Lollipop). It's particulary useful to build
older branches that required 14.04 if you've upgraded to something newer.
First, build the image:
```
# Copy your host gitconfig, or create a stripped down version
$ cp ~/.gitconfig gitconfig
$ docker build --build-arg userid=$(id -u) --build-arg groupid=$(id -g) --build-arg username=$(id -un) -t android-build-trusty .
```
Then you can start up new instances with:
```
$ docker run -it --rm -v $ANDROID_BUILD_TOP:/src android-build-trusty
> cd /src; source build/envsetup.sh
> lunch aosp_arm-eng
> m -j50
```