add failure handling to cleaning script

clean.sh

@@ -1,24 +1,26 @@
 #!/bin/sh
 
-set -e
-
 TF_TAG="tinyFaaS"
 TMP_DIR="tmp"
 
 # remove old containers, networks and images
 containers=$(docker ps -a -q --filter label=$TF_TAG)
 
 if [ -n "$containers" ]; then
-    docker stop "$containers" > /dev/null
-    docker rm "$containers" > /dev/null
+    for container in $containers; do
+        docker stop "$container" > /dev/null || echo "Failed to stop container $container! Please stop it manually..."
+        docker rm "$container" > /dev/null || echo "Failed to remove container $container! Please remove it manually..."
+    done
 else
     echo "No old containers to remove. Skipping..."
 fi
 
 networks=$(docker network ls -q --filter label=$TF_TAG)
 
 if [ -n "$networks" ]; then
-    docker network rm "$networks" > /dev/null
+    for network in $networks; do
+        docker network rm "$network" > /dev/null || echo "Failed to remove network $network! Please remove it manually..."
+    done
 else
     echo "No old networks to remove. Skipping..."
 fi
@@ -27,17 +29,15 @@ images=$(docker image ls -q --filter label=$TF_TAG)
 
 if [ -n "$images" ]; then
     for image in $images; do
-        docker image rm "$image" > /dev/null
+        docker image rm "$image" > /dev/null || echo "Failed to remove image $image! Please remove it manually..."
     done
 else
     echo "No old images to remove. Skipping..."
 fi
 
 # remove tmp directory
 if [ -d "$TMP_DIR" ]; then
-    rm -rf "$TMP_DIR"
+    rm -rf "$TMP_DIR" > /dev/null || echo "Failed to remove directory $TMP_DIR ! Please remove it manually..."
 else
     echo "No tmp directory to remove. Skipping..."
 fi
-
-set +e