Вынес настройку интерфейса в переменную окружения

start.sh

@@ -1,5 +1,10 @@
 #!/bin/sh
-IFACE="$(ls /sys/class/net | grep '^e')"
+
+die() { echo "$*" 1>&2 ; exit 0; }  # Return 0 to stop docker container
+
+[[ -z "${LOCAL_IP}" ]] && die 'Required env variable $PACKMATE_LOCAL_IP is not set, exiting!'
+[[ -z "${IFACE}" ]] && die 'Required env variable $PACKMATE_INTERFACE is not set, exiting!'
+
 echo "Capturing on interface ${IFACE} with IP ${LOCAL_IP}..."
 echo "--> DEBUG: Web login is ${WEB_LOGIN}:${WEB_PASSWORD}"
 exec java -jar app.jar --spring.datasource.url="jdbc:postgresql://127.0.0.1:65001/${DB_NAME}" --spring.datasource.username="${DB_USER}" --spring.datasource.password="${DB_PASSWORD}" --interface-name="${IFACE}" --local-ip="${LOCAL_IP}" --account-login="${WEB_LOGIN}" --account-password="${WEB_PASSWORD}" --server.port=65000