% build:

# Build Containers

## Option #1

```bash
# opts -----
group="freesurfer"
software="freesurfer"
ver="7.1.1"

# paths -----
export SINGULARITY_TMPDIR="${root_dir}/software/singularity_images/tmp"
export SINGULARITY_CACHEDIR="${root_dir}/software/singularity_images/cache"

# main -----
cmd="singularity build \
${root_dir}/software/singularity_images/${software}-${ver}.simg \
docker://${group}/${software}:${ver}"
echo -e "\ncommand:\n${cmd}\n"
eval ${cmd}
```

## Option #2

If the first option doesn't work, try running this locally. Assuming that you have docker installed and working (<https://docs.docker.com/get-docker/>)

```bash
# opts -----
group="freesurfer"
software="freesurfer"
ver="7.1.1"

# paths -----
out_dir="${root_dir}/software/singularity_images"

# main -----
cmd="docker run \
-v /var/run/docker.sock:/var/run/docker.sock \
-v ${out_dir}:/output \
--privileged \
--tty \
--rm \
singularityware/docker2singularity \
${group}/${software}:${ver}"
echo -e "\ncommand:\n${cmd}\n"
eval ${cmd}
```

## Option #3

If the two first options don't work, obtain or create a docker file (advanced option).

```bash
docker build -t <docker_image_name> </path/to/Dockerfile>
```

To check if the image was created:

```bash
docker images
```

Then, run option #2 to save the docker image as a singularity image

For a current list of dockerfiles that we have created along with code to create the docker container and singularity image, see the following [page](https://github.com/epongpipat/dockerfiles)