diff --git a/checkstyle-runner/Dockerfile b/checkstyle-runner/Dockerfile
deleted file mode 100644
index 4792f71..0000000
--- a/checkstyle-runner/Dockerfile
+++ /dev/null
@@ -1,16 +0,0 @@
-FROM java:8-jdk
-
-WORKDIR /checkstyle
-
-ADD tubs_checks.xml /checkstyle
-
-ENV CHECKSTYLE_VERSION=7.6.1
-
-RUN curl -sLO https://sourceforge.net/projects/checkstyle/files/checkstyle/${CHECKSTYLE_VERSION}/checkstyle-${CHECKSTYLE_VERSION}-all.jar && mv checkstyle-${CHECKSTYLE_VERSION}-all.jar checkstyle.jar
-
-# gitlab runner does not use entrypoint like this
-# https://docs.gitlab.com/runner/executors/docker.html#the-entrypoint
-#ENTRYPOINT ["java","-jar","checkstyle.jar","-c","tubs_checks.xml"]
-
-# default option, use file names to check
-#CMD ["-v"]
\ No newline at end of file
diff --git a/checkstyle-runner/gitlab-ci.yml b/checkstyle-runner/gitlab-ci.yml
deleted file mode 100644
index eebf662..0000000
--- a/checkstyle-runner/gitlab-ci.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-image: y0067212/checkstyle-ips
-
-checkstyle:
-  script:
-    - java -jar checkstyle.jar -c tubs_checks.xml .
-  artifacts:
-    paths:
-      - checkstyle/
diff --git a/checkstyle-runner/tubs_checks.xml b/checkstyle-runner/tubs_checks.xml
deleted file mode 100644
index d1b866b..0000000
--- a/checkstyle-runner/tubs_checks.xml
+++ /dev/null
@@ -1,205 +0,0 @@
-<?xml version="1.0"?>
-<!DOCTYPE module PUBLIC
-        "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
-        "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
-
-<!--
-  Checkstyle configuration that checks the sun coding conventions from:
-
-  - the Java Language Specification at
-    http://java.sun.com/docs/books/jls/second_edition/html/index.html
-
-  - the Sun Code Conventions at http://java.sun.com/docs/codeconv/
-
-  - the Javadoc guidelines at
-    http://java.sun.com/j2se/javadoc/writingdoccomments/index.html
-
-  - the JDK Api documentation http://java.sun.com/j2se/docs/api/index.html
-  - some best practices
-  Checkstyle is very configurable. Be sure to read the documentation at
-  http://checkstyle.sf.net (or in your downloaded distribution).
-  Most Checks are configurable, be sure to consult the documentation.
-  To completely disable a check, just comment it out or delete it from the file.
-  Finally, it is worth reading the documentation.
--->
-
-<module name="Checker">
-  <!-- Checks that a package.html file exists for each package.     -->
-  <!-- See http://checkstyle.sf.net/config_javadoc.html#PackageHtml -->
-  <!-- <module name="PackageHtml"/> -->
-  <!-- Checks whether files end with a new line.                        -->
-  <!-- See http://checkstyle.sf.net/config_misc.html#NewlineAtEndOfFile -->
-
-  <!--module name="NewlineAtEndOfFile">
-    <property name="fileExtensions" value="java"/>
-  </module-->
-
-  <!-- Checks that property files contain the same keys.         -->
-  <!-- See http://checkstyle.sf.net/config_misc.html#Translation -->
-  <!--module name="Translation"/-->
-
-  <module name="FileLength"/>
-  <!-- keine tabs erlauben -->
-  <!--module name="FileTabCharacter">
-    <property name="eachLine" value="true"/>
-  </module-->
-
-  <!-- <module name="JavadocPackage"/> -->
-
-  <module name="TreeWalker">
-    <property name="tabWidth" value="4"/>
-
-    <!-- Strings werden nicht mit == oder != verglichen -->
-    <module name="StringLiteralEquality"/>
-
-
-
-    <!-- Checks for Javadoc comments.                     -->
-    <!-- See http://checkstyle.sf.net/config_javadoc.html -->
-
-    <module name="JavadocStyle">
-      <property name="scope" value="private"/>
-      <property name="excludeScope" value="package"/>
-      <property name="checkFirstSentence" value="false"/>
-      <property name="checkEmptyJavadoc" value="true"/>
-    </module>
-
-    <module name="JavadocMethod">
-      <property name="allowMissingPropertyJavadoc" value="true"/>
-      <property name="scope" value="package"/>
-      <property name="ignoreMethodNamesRegex" value="^main$"/>
-    </module>
-
-    <module name="JavadocType">
-      <property name="authorFormat" value="^.+ [0-9]{7}\s+(Gruppe|[gG]roup)\s+[1-9][0-9]?[a-zA-Z]?" />
-    </module>
-
-    <module name="JavadocVariable">
-      <property name="scope" value="public"/>
-      <property name="tokens" value="VARIABLE_DEF"/>
-    </module>
-
-    <!-- Checks for Naming Conventions.                  -->
-    <!-- See http://checkstyle.sf.net/config_naming.html -->
-    <module name="ConstantName"/>
-    <!-- <module name="LocalFinalVariableName"/> -->
-    <module name="LocalVariableName"/>
-    <module name="MemberName"/>
-    <module name="MethodName"/>
-    <module name="ParameterName"/>
-    <module name="StaticVariableName"/>
-    <module name="TypeName"/>
-
-    <!-- Checks for Headers                                -->
-    <!-- See http://checkstyle.sf.net/config_header.html   -->
-    <!-- <module name="Header">                            -->
-    <!-- The follow property value demonstrates the ability     -->
-    <!-- to have access to ANT properties. In this case it uses -->
-    <!-- the ${basedir} property to allow Checkstyle to be run  -->
-    <!-- from any directory within a project. See property      -->
-    <!-- expansion,                                             -->
-    <!-- http://checkstyle.sf.net/config.html#properties        -->
-    <!-- <property                                              -->
-    <!--     name="headerFile"                                  -->
-    <!--     value="${basedir}/java.header"/>                   -->
-    <!-- </module> -->
-
-    <!-- Checks for imports                              -->
-    <!-- See http://checkstyle.sf.net/config_import.html -->
-    <!-- <module name="AvoidStarImport"/> -->
-    <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
-    <module name="RedundantImport"/>
-    <module name="UnusedImports"/>
-
-    <!-- Checks for Size Violations.                    -->
-    <!-- See http://checkstyle.sf.net/config_sizes.html -->
-
-    <!-- module name="MethodLength"/ -->
-
-    <!-- Checks for whitespace                               -->
-    <!-- See http://checkstyle.sf.net/config_whitespace.html -->
-    <!-- module name="EmptyForInitializerPad">
-      <property name="option" value="space"/>
-    </module -->
-
-    <!-- module name="EmptyForIteratorPad">
-      <property name="option" value="space"/>
-    </module -->
-
-    <module name="MethodParamPad"/>
-    <module name="NoWhitespaceAfter"/>
-    <module name="NoWhitespaceBefore"/>
-    <module name="OperatorWrap"/>
-    <module name="TypecastParenPad"/>
-
-    <module name="WhitespaceAfter"/>
-    <module name="WhitespaceAround"/>
-
-    <!-- Modifier Checks                                    -->
-    <!-- See http://checkstyle.sf.net/config_modifiers.html -->
-    <!-- module name="ModifierOrder"/ -->
-
-    <!-- Checks for blocks. You know, those {}'s         -->
-    <!-- See http://checkstyle.sf.net/config_blocks.html -->
-    <!-- module name="AvoidNestedBlocks"/ -->
-    <module name="EmptyBlock"/>
-    <module name="LeftCurly"/>
-    <module name="NeedBraces"/>
-    <module name="RightCurly"/>
-
-    <!-- Checks for common coding problems               -->
-    <!-- See http://checkstyle.sf.net/config_coding.html -->
-    <!-- <module name="AvoidInlineConditionals"/> -->
-    <module name="EmptyStatement"/>
-    <!-- <module name="EqualsHashCode"/> -->
-    <module name="IllegalInstantiation"/>
-    <module name="InnerAssignment"/>
-    <!-- module name="MissingSwitchDefault"/-->
-    <!-- module name="FallThrough"/-->
-    <module name="DefaultComesLast"/>
-
-    <module name="OneStatementPerLine"/>
-    <!-- <module name="StringLiteralEquality"/> -->
-
-    <!-- Checks for class design                         -->
-    <!-- See http://checkstyle.sf.net/config_design.html -->
-    <!-- <module name="DesignForExtension"/> -->
-    <module name="FinalClass"/>
-    <!-- <module name="FinalLocalVariable"/> -->
-    <!-- <module name="HideUtilityClassConstructor"/> -->
-
-    <module name="LineLength">
-      <property name="max" value="150"/>
-    </module>
-
-    <module name="VisibilityModifier"/>
-    <!-- module name="DeclarationOrder"/ -->
-    <!-- <module name="RequireThis"/> -->
-
-    <!-- module name="RequireThis">
-      <property name="checkFields" value="false"/>
-      <property name="checkMethods" value="false"/>
-    </module -->
-
-    <!-- Miscellaneous other checks.                   -->
-    <!-- See http://checkstyle.sf.net/config_misc.html -->
-    <module name="ArrayTypeStyle"/>
-    <module name="GenericWhitespace"/>
-
-    <module name="TodoComment"/>
-    <module name="UpperEll"/>
-
-    <module name="Indentation"> <!-- einrueckung von 4 leerzeichen -->
-      <property name="basicOffset" value="4"/>
-      <property name="caseIndent" value="4"/>
-    </module>
-
-    <!--    <module name="CyclomaticComplexity"> -->
-    <!--      <property name="max" value="7"/> -->
-    <!--    </module> -->
-
-    <module name="IllegalCatch"/>
-    <module name="IllegalThrows"/>
-
-  </module>
-</module>