initial commit

Author: pinhead84

.gitignore

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+debian.tgz
+package

Dockerfile

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+FROM scratch
+ADD debian.tgz /
+
+RUN apt-get update \
+&& apt-get install -qq -y --no-install-recommends \
+ software-properties-common \
+ autoconf \
+ build-essential \
+ curl \
+ file \
+ git \
+ libasound2-dev \
+ libcups2-dev \
+ libfontconfig1-dev \
+ libx11-dev \
+ libxext-dev \
+ libxrandr-dev \
+ libxrender-dev \
+ libxt-dev \
+ libxtst-dev \
+ unzip \
+ wget \
+ zip \
+&& rm -rf /var/lib/apt/lists/*
+
+RUN mkdir -p /openjdk-linux-x86 \
+&& useradd -ms /bin/bash build \
+&& chown build /openjdk-linux-x86
+
+USER build
+WORKDIR /openjdk-linux-x86
+RUN git clone https://github.com/OpenIndex/openjdk-linux-x86.git /openjdk-linux-x86 \
+&& git checkout jdk11
+
+ENTRYPOINT ["/usr/bin/linux32", "--", "/openjdk-linux-x86/build.sh"]

README.md

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+This repository contains an example about how to build OpenJDK 11 for Linux x86 (IA-32) on a Linux x86-64 system with [Docker](https://www.docker.com/).
+
+In the first step run `sudo build-image.sh` in order to create a Debian i386 root filesystem. You might use other already existing images from [Docker Hub](https://hub.docker.com/) as well and update the `Dockerfile` accordingly. But I did not test this yet.
+
+Afterwards execute `build-openjdk.sh` in order to start the build process. If everything went fine, the created OpenJDK packages are stored in the newly created `package` folder.

build-image.sh

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+#!/usr/bin/env bash
+### Build a docker image for debian i386.
+
+### settings
+arch=i386
+suite=${1:-stretch}
+chroot_dir="/var/chroot/$suite"
+apt_mirror="http://http.debian.net/debian"
+docker_image="32bit/debian-i386:$suite"
+
+### make sure that the required tools are installed
+#apt-get install -y docker.io debootstrap dchroot
+
+### install a minbase system with debootstrap
+export DEBIAN_FRONTEND=noninteractive
+debootstrap --arch $arch $suite $chroot_dir $apt_mirror
+
+### update the list of package sources
+cat <<EOF > $chroot_dir/etc/apt/sources.list
+deb $apt_mirror $suite main contrib non-free
+deb $apt_mirror $suite-updates main contrib non-free
+deb http://security.debian.org/ $suite/updates main contrib non-free
+EOF
+
+### upgrade packages
+chroot $chroot_dir apt-get update
+chroot $chroot_dir apt-get upgrade -y
+
+### cleanup
+chroot $chroot_dir apt-get autoclean
+chroot $chroot_dir apt-get clean
+chroot $chroot_dir apt-get autoremove
+
+### create a tar archive from the chroot directory
+tar cfz debian.tgz -C $chroot_dir .
+
+### import this tar archive into a docker image:
+#cat debian.tgz | docker import - $docker_image
+
+# ### push image to Docker Hub
+# docker push $docker_image
+
+### cleanup
+#rm debian.tgz
+rm -rf $chroot_dir

build-openjdk.sh

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+#!/usr/bin/env bash
+DOCKER_IMAGE="openjdk11-linux-x86"
+DOCKER_CONTAINER="build-openjdk11-linux-x86"
+
+set -e
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd "$DIR"
+
+DOCKER_IMAGE_ID="$(docker images -q "$DOCKER_IMAGE")"
+if [[ -z "$DOCKER_IMAGE_ID" ]]; then
+ echo ""
+ echo -e "\e[1m\e[92m=================================================\e[0m"
+ echo -e "\e[1m\e[92m build docker image\e[0m"
+ echo -e "\e[1m\e[92m=================================================\e[0m"
+ echo ""
+ docker build --tag "$DOCKER_IMAGE" .
+fi
+
+echo ""
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo -e "\e[1m\e[92m run docker image\e[0m"
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo ""
+docker run --name "$DOCKER_CONTAINER" "$DOCKER_IMAGE"
+
+echo ""
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo -e "\e[1m\e[92m export packages\e[0m"
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo ""
+rm -Rf package
+DOCKER_CONTAINER_ID="$(docker ps -aqf "name=$DOCKER_CONTAINER")"
+docker cp "$DOCKER_CONTAINER_ID":/openjdk-linux-x86/package .
+
+echo ""
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo -e "\e[1m\e[92m remove docker container\e[0m"
+echo -e "\e[1m\e[92m=================================================\e[0m"
+echo ""
+docker container rm -f "$DOCKER_CONTAINER_ID"