docker2singularity Demo

This demo will show you how to convert a Docker container into a Singularity container, starting from a Dockerfile.

NOTE: Workflow designed for macOS

• create the demo Docker container for conversion to Singularity

make docker

• make sure the demo Docker is working

make docker-test
# FastQC v0.11.5

output:

docker run --rm -t stevekm/fastqc --version
FastQC v0.11.5

• setup the docker2singularity container and convert the demo Docker to Singularity

make docker2singularity

• load and test the converted Singularity container in Vagrant

make vagrant

output:

...
...
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = "en_US:",
	LC_ALL = (unset),
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
FastQC v0.11.5
Connection to 127.0.0.1 closed.

• if something broke along the way, reset with:

make clean

Software

Used in this workflow:

• Docker version 17.09.1-ce, build 19e2cf6
• Vagrant 2.0.1
• macOS Sierra 10.12