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+# Server backup
+
+This Docker image contains a simple script and a cron job to automate backups. For example, to periodically backup directories on a VPS.
+
+The container needs to be able to mount a volume that is as least as high as the most common path ancestor amongst your target backup directories. For example, all of my directories to backup are contained inside `~/myusername` and so I use that as the volume mount below.
+
+## Building the image
+
+Once the repo has been cloned locally, simply run `docker build -t backup .` to build the image.
+
+## Running the image container
+
+Pass the required environment variables to the container to run it. For example:
+
+```
+docker run -d --restart always \
+  -v "/home/myusername:/backup" \
+  -e "BUCKET=<B2 BUCKET NAME>" \
+  -e "ENDPOINT=https://s3.eu-central-003.backblazeb2.com" \
+  -e "AWS_ACCESS_KEY_ID=<B2 keyID>" \
+  -e "AWS_SECRET_ACCESS_KEY=<B2 applicationKey>" \
+  -e "BACKUP_DIRS=folder1 folder2 folder3" \
+  backup:latest
+```