add DEBUG option

rootfs/usr/local/bin/entrypoint.sh

@@ -1,5 +1,11 @@
 #!/bin/ash
   if [ -z "${1}" ]; then
+
+    if [ ! -z "${DEBUG}" ]; then
+      KMS_LOGLEVEL="DEBUG"
+      eleven log debug "setting kms log level to DEBUG"
+    fi
+
     cd /opt/py-kms
     set -- "python3" \
       pykms_Server.py \
@@ -12,7 +18,7 @@
       -s /kms/var/kms.db \
       -w RANDOM \
       -V ${KMS_LOGLEVEL} \
-      -F /var/log/kms.log \
+      -F STDOUT \
       -y
     
     eleven log start