Okay, same for Postorius.

Author: blizzard4591

postorius/docker-entrypoint.sh

@@ -16,8 +16,19 @@ function wait_for_postgres () {
 
 function wait_for_mysql () {
 	# Check if MySQL is up and accepting connections.
-	readarray -d' ' -t ENDPOINT <<< $(python3 -c "from urllib.parse import urlparse; o = urlparse('$DATABASE_URL'); print('%s %s' % (o.hostname, o.port if o.port else '3306'));")
-	until mysqladmin ping --host ${ENDPOINT[0]} --port ${ENDPOINT[1]} --silent; do
+	# The LAST_ELEMENT is necessary to circumvent the socket picking up the newline
+	readarray -d' ' -t ENDPOINT <<< $(python3 -c "from urllib.parse import urlparse; from urllib.parse import parse_qs; o = urlparse('$DATABASE_URL'); q = parse_qs(o.query); print('%s %s %s %s' % (o.hostname, o.port if o.port else '3306', q['unix_socket'][0] if 'unix_socket' in q else 'NONE_SPECIFIED', 'LAST_ELEMENT'));")
+	COMMAND=""
+	COMMAND_ARG=""
+	if  [[ "${ENDPOINT[2]}" == "NONE_SPECIFIED" ]] ;
+	then
+		COMMAND="--host"
+		COMMAND_ARG="${ENDPOINT[0]}"
+	else
+		COMMAND="-S"
+		COMMAND_ARG="${ENDPOINT[2]}"
+	fi
+	until mysqladmin ping ${COMMAND} ${COMMAND_ARG} --port ${ENDPOINT[1]} --silent; do
 		>&2 echo "MySQL is unavailable - sleeping"
 		sleep 1
 	done