docker-entrypoint.sh
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docker-entrypoint.sh
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			#!/bin/bash
			#
			# docker-entrypoint for hbp-solr-lucene-docker
			set -e
			# From bash set manual:
			# -e Exit immediately if a simple command exits with a non-zero status, unless
			# the command that fails is part of an until or while loop, part of an if
			# statement, part of a && or \|\| list, or if the command's return status is
			# being inverted using !. -o errexit

			if [[ "$VERBOSE" = "yes" ]]; then
			set -x
			fi

			# when invoked with e.g.: docker run hbp-lucene-solr -help
			if [ "${1:0:1}" = '-' ]; then
			set -- hbp-solr-foreground "$@"
			# From bash set manual:
			# -- If no arguments follow this option, then the positional parameters are unset.
			# Otherwise, the positional parameters are set to the arguments, even if
			# some of them begin with a `-'.
			fi

			# execute command passed in as arguments.
			#

			# The Dockerfile has specified the PATH to include
			# /opt/hbp-lucene-solr/bin (for Solr) and
			# /opt/hbp-solr-lucene-docker/scripts (for our scripts like
			# solr-foreground, solr-create, solr-precreate, solr-demo). Note: if
			# you specify "solr", you'll typically want to add -f to run it in the
			# foreground.
			exec "$@"