add way for teh mdoel to know ehere it is and download cover images when

downloading model

src/main/java/io/bioimage/modelrunner/bioimageio/description/ModelDescriptorFactory.java

@@ -66,6 +66,7 @@ public static ModelDescriptor readFromLocalFile(String modelFile) throws ModelSp
     	Map<String, Object> yamlElements = YAMLUtils.load(modelFile);
         // TODO yamlElements.put(fromLocalKey, true);
     	// TODO yamlElements.put(modelPathKey, new File(modelFile).getParent());
+    	yamlElements.put("modelPath", new File(modelFile).getParentFile().getAbsolutePath());
         return fromMap(yamlElements);
     }
 
@@ -162,11 +163,9 @@ protected static List<String> buildUrlElements(Object coverElements)
     		List<?> elems = (List<?>) coverElements;
 	        for (Object elem : elems)
 	        {
-	        	if (checkUrl((String) elem) == null)
-	        		continue;
 	            covers.add((String) elem);
 	        }
-    	} else if ((coverElements instanceof String) && checkUrl((String) coverElements) != null) {
+    	} else if ((coverElements instanceof String)) {
             covers.add((String) coverElements);
     	} else {
     		covers = null;

src/main/java/io/bioimage/modelrunner/bioimageio/download/DownloadModel.java

@@ -232,6 +232,7 @@ private void retriveDownloadModelLinks() {
 		downloadableLinks = new HashMap<String, String>();
 		addAttachments();
 		addRDF();
+		addCovers();
 		addSampleInputs();
 		addSampleOutputs();
 		addTestInputs();
@@ -286,6 +287,19 @@ private void addWeights() {
 		}
 	}
 
+	/**
+	 * Add the model covers to the downloadable links
+	 */
+	private void addCovers() {
+		int c = 0;
+		for (String ss : descriptor.getCovers()) {
+			if (!checkURL(ss))
+				downloadableLinks.put(TEST_INPUTS_KEY + "_" + c ++, this.descriptor.getModelURL() + ss);
+			else
+				downloadableLinks.put(TEST_INPUTS_KEY + "_" + c ++, ss);
+		}
+	}
+
 	/**
 	 * Add the test inputs to the downloadable links
 	 */