diff --git a/postgres-docker/Dockerfile b/postgres-docker/Dockerfile
index 48d6c2a5e..0ec1ba66b 100644
--- a/postgres-docker/Dockerfile
+++ b/postgres-docker/Dockerfile
@@ -5,7 +5,7 @@ RUN mkdir /backups
 COPY ./backup.sh /backups
 COPY ./weed.sh /backups
 COPY ./cronfile /etc/cron.d/cronfile
-RUN apt-get update && apt-get -y install cron
+RUN apt-get update && apt-get -y --no-install-recommends install cron
 RUN chmod 0644 /etc/cron.d/cronfile
 RUN crontab /etc/cron.d/cronfile
 RUN touch /var/log/cron.log
diff --git a/postgres-docker/backup.sh b/postgres-docker/backup.sh
index ab96b37e8..9b65ad876 100755
--- a/postgres-docker/backup.sh
+++ b/postgres-docker/backup.sh
@@ -1,3 +1,7 @@
 #!/bin/bash
-filename=backup__$(date +%F)
-pg_dump -U fedireads  > /backups/$filename.sql
+if [ -z "$POSTGRES_DB" ]; then
+    echo "Database not specified, defaulting to bookwyrm"
+fi
+BACKUP_DB=${POSTGRES_DB:-bookwyrm}
+filename=backup_${BACKUP_DB}_$(date +%F)
+pg_dump -U $BACKUP_DB > /backups/$filename.sql