Added 'no-cron' option, cleanup

Author: istepanov

Dockerfile

@@ -13,4 +13,5 @@ RUN chmod +x /start.sh
 
 VOLUME /backup
 
-CMD '/start.sh'
+ENTRYPOINT ["/start.sh"]
+CMD [""]

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014 Ilya Stepanov
+Copyright (c) 2014-2015 Ilya Stepanov
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -5,10 +5,17 @@ Docker image with mongodump running as a cron task
 
 ### Usage
 
-Attach a target mongo container to this container and mount a volume to container's `/data` folder. Backups will appear in this volume. Optionally set up cron job schedule (default is `0 12 * * *` - runs every day at 1:00 am).
+Attach a target mongo container to this container and mount a volume to container's `/data` folder. Backups will appear in this volume. Optionally set up cron job schedule (default is `0 1 * * *` - runs every day at 1:00 am).
 
 	docker run -d \
 		-v /path/to/target/folder:/backup # where to put backups
-		-e 'CRON_SCHEDULE=0 12 * * *'     # cron job schedule
+		-e 'CRON_SCHEDULE=0 1 * * *'      # cron job schedule
 		--link my-mongo-container:mongo	   # linked container with running mongo
 		istepanov/mongodump
+
+To run backup once without cron job, add `no-cron` parameter:
+
+	docker run --rm \
+		-v /path/to/target/folder:/backup # where to put backups
+		--link my-mongo-container:mongo	   # linked container with running mongo
+		istepanov/mongodump no-cron

start.sh

@@ -2,5 +2,9 @@
 
 CRON_SCHEDULE=${CRON_SCHEDULE:-0 1 * * *}
 
-echo "$CRON_SCHEDULE /backup.sh" | crontab -
-exec cron -f
+if [[ "$1" == 'no-cron' ]]; then
+    exec /backup.sh
+else
+    echo "$CRON_SCHEDULE /backup.sh" | crontab -
+    exec cron -f
+fi