added me as maintainer

src/Dockerfile.gpulibs

@@ -1,3 +1,5 @@
+LABEL maintainer="Christoph Schranz <christoph.schranz@salzburgresearch.at>"
+
 # Install Tensorflow
 RUN conda install --quiet --yes \
     'tensorflow=1.13*' \

src/Dockerfile.header

@@ -1,4 +1,5 @@
 # Use NVIDIA CUDA as base image and run the same installation as in the other packages.
 # The version of cudatoolkit must match those of the base image, see Dockerfile.pytorch
 FROM nvidia/cuda:10.1-base-ubuntu18.04
-LABEL maintainer="Jupyter Project <jupyter@googlegroups.com>"
+LABEL maintainer="Christoph Schranz <christoph.schranz@salzburgresearch.at>"
+# The maintainers of subsequent sections may vary

src/Dockerfile.usefulpackages

@@ -1,3 +1,5 @@
+LABEL maintainer="Christoph Schranz <christoph.schranz@salzburgresearch.at>"
+
 # Update conda
 RUN conda update -n base conda -y