[JAVA] Build bazel with alpine

background

• I want to use bazel with alpine
• Does not exist in the default apk repository [^ 1] [^ 1]: It exists in the testing repository of apk, but I don't use it because the module I want to install is not compatible with this version.
• Bazelisk does not support alpine
• It takes time to compile, so I want to use it as a pre-built docker image

Docker image for compilation

There was a git repository compiled with ./compile.sh, so I borrowed and excerpted a part for reference dockerfile.

bazel-build

FROM python:3.8-alpine3.11

ARG bazel_ver=3.1.0
ENV JAVA_HOME=/usr/lib/jvm/default-jvm \
    PATH="$JAVA_HOME/bin:${PATH}" \
    BAZEL_VERSION=3.1.0

RUN apk add --virtual .bazel_build --no-cache g++ gcc \
  bash zip unzip cmake make linux-headers openjdk8 && \
  wget -q "https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-dist.zip" \
  -O bazel.zip && \
  mkdir "bazel-${BAZEL_VERSION}" && \
  unzip -qd "bazel-${BAZEL_VERSION}" bazel.zip && \
  rm bazel.zip && \
  cd "bazel-${BAZEL_VERSION}" && \
  sed -i -e 's/-classpath/-J-Xmx6096m -J-Xms128m -classpath/g' \
  scripts/bootstrap/compile.sh && \
  EXTRA_BAZEL_ARGS=--host_javabase=@local_jdk//:jdk ./compile.sh && \
  cp -p output/bazel /usr/bin/ && \
  cd ../ && rm -rf "bazel-${BAZEL_VERSION}" && \
  bazel version && \
  apk del --purge .bazel_build

All you have to do is docker build and push

important point

1. When compiling from source, openjdk8 is not supported because it does not support openjdk11.

2. The part replaced with sed specifies the size of Java heap memory. If not specified, the memory may be exhausted and the memory may drop on the way.

The system is out of resources.
Consult the following stack trace for details.
java.lang.OutOfMemoryError: Java heap space

References

• AfsmNGhr/alpine-tensorflow -Java heap memory management mechanism (1/2)