diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9b090ca8..19fedb64 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,6 +60,8 @@ if(FSFW_BUILD_UNITTESTS)
         )
 
         FetchContent_MakeAvailable(Catch2)
+        #fixes regression -preview4, to be confirmed in later releases
+        set_target_properties(Catch2 PROPERTIES DEBUG_POSTFIX "")
     endif()
 
     set(FSFW_CONFIG_PATH tests/src/fsfw_tests/unit/testcfg)
diff --git a/automation/Dockerfile b/automation/Dockerfile
index a530a671..9df67fc8 100644
--- a/automation/Dockerfile
+++ b/automation/Dockerfile
@@ -6,9 +6,3 @@ RUN apt-get --yes upgrade
 #tzdata is a dependency, won't install otherwise
 ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get --yes install gcc g++ cmake make lcov git valgrind nano iputils-ping
-
-RUN git clone https://github.com/catchorg/Catch2.git && \
-	cd Catch2 && \
-	git checkout v3.0.0-preview4 && \
-	cmake -Bbuild -H. -DBUILD_TESTING=OFF && \
-	cmake --build build/ --target install