diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index e7becb0f66cf3d6423b94aa740c1fcf805768544..29fc362fd3a753a342a213900572324b3d547888 100644
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -15,6 +15,8 @@ COPY . /caosdb-cppinttest
 WORKDIR /caosdb-cppinttest
 RUN rm -rf .git
 
+RUN apt-get install -y openjdk-11-jdk-headless
+
 # build and run tests
 CMD mkdir build && \
     cd build && \
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3d07eaa4fb01daf5e6b26c63cdbc9665059798b0..710b66cf0585a2c0b6a2ff447a1e14bf41759325 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -104,7 +104,7 @@ build-testenv-changes-docker:
   <<: *build-testenv
   only:
     changes:
-      - docker/*
+      - .docker/*
 
 build-testenv-triggered:
   <<: *build-testenv