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Dockerfile
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Dockerfile
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FROM openjdk:8-jre-alpine
MAINTAINER Elisey Zanko <elisey.zanko@gmail.com>
# Install required packages
RUN apk add --no-cache \
bash \
su-exec
ENV ZOO_USER=zookeeper \
ZOO_CONF_DIR=/conf \
ZOO_DATA_DIR=/data \
ZOO_DATA_LOG_DIR=/datalog \
ZOO_PORT=2181 \
ZOO_TICK_TIME=2000 \
ZOO_INIT_LIMIT=5 \
ZOO_SYNC_LIMIT=2 \
ZOO_MAX_CLIENT_CNXNS=60
# Add a user and make dirs
RUN set -ex; \
adduser -D "$ZOO_USER"; \
mkdir -p "$ZOO_DATA_LOG_DIR" "$ZOO_DATA_DIR" "$ZOO_CONF_DIR"; \
chown "$ZOO_USER:$ZOO_USER" "$ZOO_DATA_LOG_DIR" "$ZOO_DATA_DIR" "$ZOO_CONF_DIR"
ARG GPG_KEY=C823E3E5B12AF29C67F81976F5CECB3CB5E9BD2D
ARG DISTRO_NAME=zookeeper-3.4.10
# Download Apache Zookeeper, verify its PGP signature, untar and clean up
RUN set -ex; \
apk add --no-cache --virtual .build-deps \
ca-certificates \
gnupg \
libressl; \
wget -q "https://www.apache.org/dist/zookeeper/$DISTRO_NAME/$DISTRO_NAME.tar.gz"; \
wget -q "https://www.apache.org/dist/zookeeper/$DISTRO_NAME/$DISTRO_NAME.tar.gz.asc"; \
export GNUPGHOME="$(mktemp -d)"; \
gpg --keyserver ha.pool.sks-keyservers.net --recv-key "$GPG_KEY" || \
gpg --keyserver pgp.mit.edu --recv-keys "$GPG_KEY" || \
gpg --keyserver keyserver.pgp.com --recv-keys "$GPG_KEY"; \
gpg --batch --verify "$DISTRO_NAME.tar.gz.asc" "$DISTRO_NAME.tar.gz"; \
tar -xzf "$DISTRO_NAME.tar.gz"; \
mv "$DISTRO_NAME/conf/"* "$ZOO_CONF_DIR"; \
rm -rf "$GNUPGHOME" "$DISTRO_NAME.tar.gz" "$DISTRO_NAME.tar.gz.asc"; \
apk del .build-deps
WORKDIR $DISTRO_NAME
VOLUME ["$ZOO_DATA_DIR", "$ZOO_DATA_LOG_DIR"]
EXPOSE $ZOO_PORT 2888 3888
ENV PATH=$PATH:/$DISTRO_NAME/bin \
ZOOCFGDIR=$ZOO_CONF_DIR
COPY docker-entrypoint.sh /
ENTRYPOINT ["/docker-entrypoint.sh"]
CMD ["zkServer.sh", "start-foreground"]