github.com/tri-adam/singularity@v3.1.1+incompatible/dist/alpinelinux (about) README.txt singularity-2.1.2 singularity-2.2 singularity-2.6.0 singularity-2.6.1 singularity-3.0.1 singularity-3.0.3 singularity2-master