restic: backup scripts should use absolute paths

roles/lander/files/lander.backup.sh

@@ -6,7 +6,7 @@ snapshot_dir="${data_dir}.snapshot"
 # Read-only snapshot for atomic backup
 btrfs subvolume snapshot -r "$data_dir" "$snapshot_dir" || exit $?
 
-restic backup "$snapshot_dir"
+/usr/local/bin/restic backup "$snapshot_dir"
 
 # Always remove snapshot subvolume, even if restic fails
 btrfs subvolume delete "$snapshot_dir"

roles/restic/tasks/main.yml

@@ -53,4 +53,4 @@
     name: 'Perform nightly backups'
     minute: '0'
     hour: '2'
-    job: 'bash /etc/backups/backup-all.sh'
+    job: '/usr/bin/bash /etc/backups/backup-all.sh'

roles/restic/templates/backup-all.sh.j2

@@ -9,9 +9,9 @@ export RESTIC_REPOSITORY='rest:http://{{ groups['nas'][0] }}:8000/backups'
 export RESTIC_PASSWORD_FILE='/etc/backups/restic_backups_passwd'
 
 for script in $(find /etc/backups -name '*.backup.sh'); do
-    bash "$script"
+    /usr/bin/bash "$script"
 done
 
 # Prune older backups
-restic forget --keep-last 7 && \
-    restic prune
+/usr/local/bin/restic forget --keep-last 7 && \
+    /usr/local/bin/restic prune