Resolve "Force `ddeploy` options (e.g. image retention)"

Closes #43 (closed)

scripts/enforce_labels.bash

@@ -15,7 +15,7 @@ if ! docker inspect --type=image "$1" > /dev/null ; then
 fi
 
 for label in "${!enforced_labels[@]}" ; do     
-    if ! docker inspect -f "{{json .Config.Labels }}" "$image_name" | jq -e '.['\"$label\"']' ; then 
+    if ! docker inspect -f "{{json .Config.Labels }}" "$image_name" | jq -e '.['\"$label\"']' > /dev/null ; then 
         echo "Key not found" 
         echo "$label = ${enforced_labels[$label]}"
         label_args+=" --label $label=\"${enforced_labels[$label]}\""
@@ -24,5 +24,5 @@ done
 
 if [ -v label_args ]; then 
     run_command="echo \"FROM $image_name\" | docker build $label_args -t $image_name -"
-    echo "$run_command"
+    eval "$run_command"
 fi