From d3732519b9749fe2cb338818f8cf16533f5e5424 Mon Sep 17 00:00:00 2001
From: Tobias Kaupat <code@niondir.de>
Date: Tue, 8 Nov 2016 00:32:13 +0100
Subject: [PATCH] Support RESTIC_FORGET_ARGS

---
 Dockerfile | 1 +
 backup.sh  | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 6f211de..ec7e19c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -17,6 +17,7 @@ ENV RESTIC_TAG=""
 ENV NFS_TARGET=""
 # By default backup every 6 hours
 ENV BACKUP_CRON="* */6 * * *"
+ENV RESTIC_FORGET_ARGS=""
 
 # /data is the dir where you have to put the data to be backed up
 VOLUME /data
diff --git a/backup.sh b/backup.sh
index 3e0954d..3efa25b 100644
--- a/backup.sh
+++ b/backup.sh
@@ -4,4 +4,7 @@ echo "Starting Backup"
 
 restic backup /data --tag=${RESTIC_TAG?"Missing environment variable RESTIC_TAG"} >> /var/log/cron.log
 
-
+if [ -n "${RESTIC_FORGET_ARGS}" ]; then
+    echo "Forget about old snapshots based on RESTIC_FORGET_ARGS = ${RESTIC_FORGET_ARGS}"
+    restic forget ${RESTIC_FORGET_ARGS}
+fi