Fix large file transfer

artifacttemplates/http%3A%2F%2Fopentosca.org%2Fartifacttemplates/DockerContainer-IA-Manage/source/src/main/java/org/opentosca/nodetypes/org_opentosca_nodetypes_DockerContainer_IA_Manage.java

 package org.opentosca.nodetypes;
 
+import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
@@ -127,7 +128,7 @@ public class org_opentosca_nodetypes_DockerContainer_IA_Manage extends AbstractI
 		String whichSudo = executeCommand(container, "which sudo");
 
 		if (whichSudo == null || whichSudo.isEmpty()) {
-			executeCommand(container, "apt-get update && apt-get -yq install sudo");
+			executeCommand(container, "apt-get update && apt-get -qy install sudo");
 		}
 	}
 
@@ -143,8 +144,24 @@ public class org_opentosca_nodetypes_DockerContainer_IA_Manage extends AbstractI
 	}
 
 	private void uploadFile(Container container, String fileContent, String targetPath) throws Exception {
-		String base64 = new String(Base64.getEncoder().encode(fileContent.getBytes()));
-		executeCommand(container, "echo '" + base64 + "' | base64 --decode > " + targetPath);
+		System.out.println("Uploading file to: '" + targetPath + "'");
+		Shell shell = new SshByPassword(container.host, container.port, container.user, container.pass);
+		byte[] content = fileContent.getBytes();
+
+		if (content.length < 20480) {
+			String base64 = new String(Base64.getEncoder().encode(content));
+			shell.exec("echo '" + base64 + "' | base64 --decode > " + targetPath, null, null, null);
+		} else {
+			String base64 = null;
+			byte[] buffer = new byte[20480];
+			ByteArrayInputStream stream = new ByteArrayInputStream(content);
+
+			while (stream.read(buffer) > 0) {
+				base64 = new String(Base64.getEncoder().encode(buffer));
+				shell.exec("echo '" + base64 + "' | base64 --decode >> " + targetPath, null, null, null);
+				buffer = new byte[stream.available() > 20480 ? 20480 : stream.available()];
+			}
+		}
 	}
 
 	private void waitForAvailability(Container container) throws InterruptedException, IOException {