cloudron-support: auto cleanup

(cherry picked from commit 68066cdd48)

scripts/cloudron-support

@@ -580,15 +580,39 @@ function troubleshoot() {
     check_unbound # this is less fatal after 8.0
 }
 
+function cleanup_disk_space() {
+    read -p "Truncate log files to reclaim space ? (y/N) " -n 1 -r choice
+    echo -e "\n"
+    if [[ $choice =~ ^[Yy]$ ]]; then
+        truncate -s0 /home/yellowtent/platformdata/logs/*/*.log
+        rm -f /home/yellowtent/platformdata/logs/*.log.* # delete the log.1, log.2 etc
+    fi
+
+    read -p "Prune docker system resources to reclaim space ? (y/N) " -n 1 -r choice
+    echo -e "\n"
+    if [[ $choice =~ ^[Yy]$ ]]; then
+        docker images prune -fa || true
+    fi
+
+    read -p "Prune docker volumes to reclaim space ? (y/N) " -n 1 -r choice
+    echo -e "\n"
+    if [[ $choice =~ ^[Yy]$ ]]; then
+        for container in $(docker ps --format "{{.ID}}"); do
+            docker exec "$container" find /tmp -type f -mtime +1 -delete || true
+            docker exec "$container" find /run -type f -mtime +1 -delete || true
+        done
+    fi
+}
+
 function check_disk_space() {
     # check if at least 10mb root partition space is available
     if [[ "`df --output="avail" / | sed -n 2p`" -lt "10240" ]]; then
-        echo "No more space left on /"
-        echo "This is likely the root case of the issue. Free up some space and also check other partitions below:"
-        echo ""
-        df -h
-        echo ""
-        echo "To recover from a full disk, follow the guide at https://docs.cloudron.io/troubleshooting/#recovery-after-disk-full"
+        echo "No more space left on / (see df -h output)"
+        cleanup_disk_space
+    fi
+
+    if [[ "`df --output="avail" / | sed -n 2p`" -lt "10240" ]]; then
+        echo "Still no space despite cleaning up. If you have backups (/var/backups) on this disk, delete old backups to free some space"
         exit 1
     fi