fixed cwltool version and version bump

kubernetes/Dockerfile

@@ -12,7 +12,7 @@ LABEL documentation="NA"
 LABEL license="NA"
 LABEL tags="Base"
 
-# ARG cwltool_version=3.0.20200720165847
+# ARG cwltool_version=3.1.20211004060744
 
 ENV DEBIAN_FRONTEND=noninteractive LANG=en_US.UTF-8 LC_ALL=C.UTF-8 LANGUAGE=en_US.UTF-8
 
@@ -22,7 +22,7 @@ ENV DEBIAN_FRONTEND=noninteractive LANG=en_US.UTF-8 LC_ALL=C.UTF-8 LANGUAGE=en_U
 # Install ubuntu modules and the workflow application # --no-install-recommends 
 RUN apt-get update && apt-get install --yes build-essential cpanminus curl git gnupg htop libfontconfig1 locales nano nodejs pigz python3-dev python3-distutils python3.8 raptor2-utils raptor2-utils sshpass unzip wget zip && \
 	curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py && python3 get-pip.py && \
-	python3 -m pip install cwltool &&\
+	python3 -m pip install cwltool==3.1.20211004060744 &&\
 	cwltool --version && python3 -m pip install html5lib
 
 # Enable icommands