chore: include demo backup script, make it flakey

Dockerfile.multiarches

@@ -42,6 +42,8 @@ EXPOSE 1337/tcp
 
 COPY config.yaml /config
 COPY var/entities/* /config/entities/
+COPY examples/backupScript.sh /opt/backupScript.sh
+RUN chmod 755 /opt/backupScript.sh
 VOLUME /config
 
 ARG TARGETPLATFORM

Dockerfile.singlearch

@@ -35,6 +35,8 @@ EXPOSE 1337/tcp
 
 COPY config.yaml /config
 COPY var/entities/* /config/entities/
+COPY examples/backupScript.sh /opt/backupScript.sh
+RUN chmod 755 /opt/backupScript.sh
 VOLUME /config
 
 COPY OliveTin /usr/bin/OliveTin

examples/backupScript.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+echo "Starting backup script"
+
+# Demo behaviour: 50% finish in 9 seconds (within the 10s action timeout),
+# 50% run for 15 seconds (typically times out).
+if (( RANDOM % 2 == 0 )); then
+	maxFiles=9
+	echo "Demo: backup will finish in 9 seconds"
+else
+	maxFiles=15
+	echo "Demo: backup will run for 15 seconds (may exceed the action timeout)"
+fi
+
+for fileIndex in $(seq 1 "$maxFiles"); do
+	echo "Backing up file: $fileIndex"
+	sleep 1
+done
+
+echo "All files backed up"