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Dockerfile
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FROM openjdk:11-jre-slim
CMD ["gradle"]
ENV GRADLE_HOME /opt/gradle
ENV GRADLE_VERSION 5.4.1
RUN apt-get update && \
apt-get install --yes --no-install-recommends \
unzip \
wget && \
rm -rf /var/lib/apt/lists/*
ARG GRADLE_DOWNLOAD_SHA256=7bdbad1e4f54f13c8a78abc00c26d44dd8709d4aedb704d913fb1bb78ac025dc
RUN set -o errexit -o nounset \
&& echo "Downloading Gradle" \
&& wget --no-verbose --output-document=gradle.zip "https://services.gradle.org/distributions/gradle-${GRADLE_VERSION}-bin.zip" \
\
&& echo "Checking download hash" \
&& echo "${GRADLE_DOWNLOAD_SHA256} *gradle.zip" | sha256sum --check - \
\
&& echo "Installing Gradle" \
&& unzip gradle.zip \
&& rm gradle.zip \
&& mv "gradle-${GRADLE_VERSION}" "${GRADLE_HOME}/" \
&& ln --symbolic "${GRADLE_HOME}/bin/gradle" /usr/bin/gradle \
\
&& echo "Adding gradle user and group" \
&& groupadd --system --gid 1000 gradle \
&& useradd --system --gid gradle --uid 1000 --shell /bin/bash --create-home gradle \
&& mkdir /home/gradle/.gradle \
&& chown --recursive gradle:gradle /home/gradle \
\
&& echo "Symlinking root Gradle cache to gradle Gradle cache" \
&& ln -s /home/gradle/.gradle /root/.gradle
# Create Gradle volume
USER gradle
VOLUME "/home/gradle/.gradle"
WORKDIR /home/gradle
RUN set -o errexit -o nounset \
&& echo "Testing Gradle installation" \
&& gradle --version