Fully parameterize backup schedule

Also: exercise backup code-path more frequently when running locally.

Author: c-w

docker-compose.yml

@@ -75,6 +75,8 @@ services:
     environment:
       - FORTIS_CASSANDRA_HOST=cassandra
       - FORTIS_CASSANDRA_PORT=9042
+      - BACKUP_INTERVAL=10m
+      - BACKUP_DELETE_LOOKBACK=30 minutes ago
     env_file:
       - .env-secrets
 

project-fortis-backup/docker/Dockerfile

@@ -32,6 +32,7 @@ ENV USER_FILES_BLOB_ACCOUNT_NAME=""
 ENV USER_FILES_BLOB_ACCOUNT_KEY=""
 ENV BACKUP_CONTAINER_NAME="backups"
 ENV BACKUP_DELETE_LOOKBACK="2 weeks ago"
+ENV BACKUP_INTERVAL="2h"
 
 # a one-node local cassandra is set up via docker-compose, if you wish to use a
 # larger cluster (e.g. hosted in Azure), just override this variable with the

project-fortis-backup/docker/run-backup.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
 while :; do
-  sleep 60m
+  sleep "$BACKUP_INTERVAL"
   /app/backup-cassandra-keyspace.sh settings
 done