add docker files for tophat:2.1.1

src/nf_modules/TopHat/2.1.1/Dockerfile

+FROM ubuntu:18.04
+MAINTAINER Laurent Modolo
+
+ENV TOPHAT_VERSION=2.1.1
+ENV PACKAGES tophat=${BOWTIE2_VERSION}*
+
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends ${PACKAGES} && \
+    apt-get clean

src/nf_modules/TopHat/2.1.1/docker_init.sh

+#!/bin/sh
+docker build src/nf_modules/TopHat/2.1.1 -t 'tophat:2.1.1'