* added Dockerfile

Dockerfile

@@ -0,0 +1,26 @@
+FROM debian
+
+ENV DEBIAN_FRONTEND=noninteractive 
+ENV TZ=Europe/Berlin
+
+RUN apt update && apt -y install wget curl xzdec perl zip expect
+
+WORKDIR /tmp/texlive
+RUN wget http://mirror.ctan.org/systems/texlive/tlnet/install-tl.zip
+RUN unzip ./install-tl.zip -d install
+
+WORKDIR /tmp/texlive/install
+
+# expect file
+RUN echo "set timeout -1 \n\
+spawn $(find . -maxdepth 1 -name "install-tl-*")/install-tl \n\
+expect \"Enter command:\" \n\
+send -- \"i\\\\r\" \n\
+expect "finished." \n\
+exit" >> tl-install.expect
+
+RUN  expect -f tl-install.expect
+
+ENV PATH="/usr/local/texlive/2020/bin/x86_64-linux:$PATH"
+
+WORKDIR /