docker-ttrss/root/etc/cont-init.d/98-wait-for-db

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#!/usr/bin/with-contenv sh
# Wait for the DB to be reachable before proceeding. This avoids race condition
# whereby database is not ready (yet), and so TTRSS config isn't correctly created
#############
# This simply duplicates the logic from ttrss-configure-db.php
ename = 'DB';
eport = 5432;
if [ $DB_TYPE = 'pgsql ];
then
eport = 5432;
dbhost = DB_PORT_5432_TCP_ADDR
else
eport = 3306;
dbhost = DB_PORT_3306_TCP_ADDR
fi
#############
# Run wait-for-it.sh to confirm DB comes up before we proceed
/srv/wait-for-it.sh $dbhost:$eport