feat: Dockerfile for new Bazel releases (#1290)

bazel/oci/Dockerfile

@@ -0,0 +1,23 @@
+# ATTENTION: use the build.sh script to build this image.
+# ./build.sh <OCI_REPOSITORY> <BAZEL_VERSION>
+
+FROM ubuntu:16.04@sha256:0f71fa8d4d2d4292c3c617fda2b36f6dabe5c8b6e34c3dc5b0d17d4e704bd39c AS base_image
+
+RUN --mount=source=bazel/oci/install_packages.sh,target=/mnt/install_packages.sh,type=bind \
+    /mnt/install_packages.sh
+
+FROM base_image AS downloader
+
+ARG BAZEL_VERSION
+
+WORKDIR /var/bazel
+RUN --mount=source=bazel/oci/install_bazel.sh,target=/mnt/install_bazel.sh,type=bind \
+    /mnt/install_bazel.sh
+
+FROM base_image
+
+RUN useradd --system --create-home --home-dir=/home/ubuntu --shell=/bin/bash --gid=root --groups=sudo --uid=1000 ubuntu
+USER ubuntu
+WORKDIR /home/ubuntu
+COPY --from=downloader /var/bazel/bazel /usr/local/bin/bazel
+ENTRYPOINT ["/usr/local/bin/bazel"]

bazel/oci/build.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+readonly OCI_REPOSITORY=$1
+readonly BAZEL_VERSION=$2
+
+set -o errexit -o nounset -o pipefail
+
+function print_usage() {
+    >&2 echo "Usage: $0 <OCI_REPOSITORY> <BAZEL_VERSION>"
+}
+
+if [ -z "${OCI_REPOSITORY}" ]; then
+    >&2 echo "ERROR: missing 'OCI_REPOSITORY' argument"
+    print_usage
+    exit 1
+fi
+
+if [ -z "${BAZEL_VERSION}" ]; then
+    >&2 echo "ERROR: missing 'BAZEL_VERSION' argument"
+    print_usage
+    exit 1
+fi
+
+GIT_ROOT=$(git rev-parse --show-toplevel)
+readonly GIT_ROOT
+
+if docker buildx version 2>&1 1>/dev/null; then
+    buildx="buildx"
+fi
+
+docker ${buildx:+"${buildx}"} build \
+    --file "${GIT_ROOT}/bazel/oci/Dockerfile" \
+    --tag "${OCI_REPOSITORY}:${BAZEL_VERSION}" \
+    --build-arg BAZEL_VERSION="${BAZEL_VERSION}" \
+    "${GIT_ROOT}"

bazel/oci/install_bazel.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+set -o errexit -o nounset -o pipefail
+
+curl \
+    --fail \
+    --location \
+    --remote-name \
+    "https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-linux-x86_64"
+
+curl \
+    --fail \
+    --location \
+    "https://github.com/bazelbuild/bazel/releases/download/${BAZEL_VERSION}/bazel-${BAZEL_VERSION}-linux-x86_64.sha256" \
+    | sha256sum --check
+
+mv "bazel-${BAZEL_VERSION}-linux-x86_64" bazel
+chmod +x bazel

bazel/oci/install_packages.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -o errexit -o nounset -o pipefail
+
+apt-get update
+
+export DEBIAN_FRONTEND="noninteractive"
+export TZ="Etc/UTC"
+
+apt-get install --yes \
+    build-essential \
+    curl \
+    git \
+    openjdk-8-jdk \
+    python3 \
+    python3-pip \
+    unzip \
+    zip
+
+ln -s "$(which python3)" /usr/bin/python