diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..af41ed2
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,8 @@
+*.log
+*.json
+*.md
+*.pdf
+*.xml
+*.jpg
+*.dtd
+out/*
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 97be5e0..f8007db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.log
-*.json
\ No newline at end of file
+*.json
+out/*
\ No newline at end of file
diff --git a/main.go b/main.go
index b01f401..53500ca 100644
--- a/main.go
+++ b/main.go
@@ -47,7 +47,7 @@
 	xml        LogMessageXML
 }
 
-var queueForConcurrent = make(chan struct{}, 1000)
+var queueForConcurrent = make(chan struct{}, 1100)
 var wg sync.WaitGroup
 var numberFiles int = 0
 var corpusPath = flag.String("p", "", "Corpus path")
diff --git a/xml.go b/xml.go
index 40a2ae9..ee42e6e 100644
--- a/xml.go
+++ b/xml.go
@@ -14,7 +14,7 @@
 	queueForConcurrent <- struct{}{}
 	defer func() { <-queueForConcurrent }()
 
-	message.xml.isWellFormed = isValidXML(message.path)
+	isWellFormed, errorXML := isValidXML(message.path)
 	logrus.WithFields(logrus.Fields{
 		"corpusname":   message.corpusname,
 		"name":         message.name,
@@ -23,28 +23,28 @@
 		"path":         message.path,
 		"mimetype":     message.mimetype,
 		"size":         message.size,
-		"isWellFormed": message.xml.isWellFormed,
-		"xmlError":     message.xml.xmlError,
+		"isWellFormed": isWellFormed,
+		"xmlError":     errorXML,
 	}).Info("")
 	incrementProcess()
 	return
 }
 
-func isValidXML(path string) bool {
+func isValidXML(path string) (bool, error) {
 	xmlFile, err := os.Open(path)
 	if err != nil {
-		return false
+		return false, err
 	}
 	// defer the closing of our xmlFile so that we can parse it later on
 	defer xmlFile.Close()
 	// read our opened xmlFile1 as a byte array. here I am checking if the file is valid or not
 	byteValue, err := ioutil.ReadAll(xmlFile)
 	if err != nil {
-		return false
+		return false, err
 	}
 
 	if xml.Unmarshal(byteValue, new(interface{})) != nil {
-		return false
+		return false, err
 	}
-	return true
+	return true, nil
 }