file_handle: add singularity files

src/singularity_modules/file_handle/0.1.1/build.sh

+#/bin/sh
+sudo singularity build --force bin/file_handle:0.1.1.sif src/singularity_modules/file_handle/0.1.1/file_handle.def
+singularity sign bin/file_handle:0.1.1.sif

src/singularity_modules/file_handle/0.1.1/file_handle.def

+Bootstrap: docker
+From: ubuntu:18.04
+
+%labels
+MAINTAINER Laurent Modolo
+
+%post
+
+FILE_HANDLE_VERSION=0.1.1
+PACKAGES="git \
+ca-certificates "
+
+apt-get update && \
+apt-get install -y --no-install-recommends ${PACKAGES} && \
+apt-get clean
+
+git clone https://github.com/LBMC/file_handle.git && \
+cd file_handle && \
+git checkout tags/v${FILE_HANDLE_VERSION} && \
+cp src/file_handle.py /usr/bin/file_handle.py && \
+chmod +x /usr/bin/file_handle.py
+
+%environment
+export FILE_HANDLE_VERSION=0.1.1
+
+%runscript
+exec /bin/bash "$@"