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docker-entrypoint.sh
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docker-entrypoint.sh
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#!/bin/sh
set -e
# Normalize the input for DISABLE_IPV6 to lowercase
DISABLE_IPV6_LOWER=$(echo "$DISABLE_IPV6" | tr '[:upper:]' '[:lower:]')
# Check for different representations of 'true' and set BIND_CONFIG
case "$DISABLE_IPV6_LOWER" in
1|true|yes)
BIND_CONFIG=":2375"
;;
*)
BIND_CONFIG="[::]:2375 v4v6"
;;
esac
# Process the HAProxy configuration template using sed
sed "s/\${BIND_CONFIG}/$BIND_CONFIG/g" /usr/local/etc/haproxy/haproxy.cfg.template > /usr/local/etc/haproxy/haproxy.cfg
# first arg is `-f` or `--some-option`
if [ "${1#-}" != "$1" ]; then
set -- haproxy "$@"
fi
if [ "$1" = 'haproxy' ]; then
shift # "haproxy"
# if the user wants "haproxy", let's add a couple useful flags
# -W -- "master-worker mode" (similar to the old "haproxy-systemd-wrapper"; allows for reload via "SIGUSR2")
# -db -- disables background mode
set -- haproxy -W -db "$@"
fi
exec "$@"