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Dockerfile
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FROM ubuntu:18.04
ENV ZK_USER=zookeeper \
ZK_DATA_DIR=/var/lib/zookeeper/data \
ZK_DATA_LOG_DIR=/var/lib/zookeeper/log \
ZK_LOG_DIR=/var/log/zookeeper \
JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
ARG GPG_KEY=C823E3E5B12AF29C67F81976F5CECB3CB5E9BD2D
ARG ZK_DIST=zookeeper-3.4.14
RUN set -x \
&& apt-get update \
&& apt-get install -y openjdk-8-jre-headless wget netcat-openbsd gpg \
&& wget -q "http://archive.apache.org/dist/zookeeper/$ZK_DIST/$ZK_DIST.tar.gz" \
&& wget -q "http://archive.apache.org/dist/zookeeper/$ZK_DIST/$ZK_DIST.tar.gz.asc" \
&& export GNUPGHOME="$(mktemp -d)" \
&& gpg --keyserver ha.pool.sks-keyservers.net --recv-key "$GPG_KEY" \
# && gpg --batch --verify "$ZK_DIST.tar.gz.asc" "$ZK_DIST.tar.gz" \
&& tar -xzf "$ZK_DIST.tar.gz" -C /opt \
&& rm -r "$GNUPGHOME" "$ZK_DIST.tar.gz" "$ZK_DIST.tar.gz.asc" \
&& ln -s /opt/$ZK_DIST /opt/zookeeper \
&& rm -rf /opt/zookeeper/CHANGES.txt \
/opt/zookeeper/README.txt \
/opt/zookeeper/NOTICE.txt \
/opt/zookeeper/CHANGES.txt \
/opt/zookeeper/README_packaging.txt \
/opt/zookeeper/build.xml \
/opt/zookeeper/config \
/opt/zookeeper/contrib \
/opt/zookeeper/dist-maven \
/opt/zookeeper/docs \
/opt/zookeeper/ivy.xml \
/opt/zookeeper/ivysettings.xml \
/opt/zookeeper/recipes \
/opt/zookeeper/src \
/opt/zookeeper/$ZK_DIST.jar.asc \
/opt/zookeeper/$ZK_DIST.jar.md5 \
/opt/zookeeper/$ZK_DIST.jar.sha1 \
&& apt-get autoremove -y wget \
&& rm -rf /var/lib/apt/lists/*
#Copy configuration generator script to bin
COPY scripts /opt/zookeeper/bin/
# Create a user for the zookeeper process and configure file system ownership
# for nessecary directories and symlink the distribution as a user executable
RUN set -x \
&& useradd $ZK_USER \
&& [ `id -u $ZK_USER` -eq 1000 ] \
&& [ `id -g $ZK_USER` -eq 1000 ] \
&& mkdir -p $ZK_DATA_DIR $ZK_DATA_LOG_DIR $ZK_LOG_DIR /usr/share/zookeeper /tmp/zookeeper /usr/etc/ \
&& chown -R "$ZK_USER:$ZK_USER" /opt/$ZK_DIST $ZK_DATA_DIR $ZK_LOG_DIR $ZK_DATA_LOG_DIR /tmp/zookeeper \
&& ln -s /opt/zookeeper/conf/ /usr/etc/zookeeper \
&& ln -s /opt/zookeeper/bin/* /usr/bin \
&& ln -s /opt/zookeeper/$ZK_DIST.jar /usr/share/zookeeper/ \
&& ln -s /opt/zookeeper/lib/* /usr/share/zookeeper