singularity: add page (#1889)

pages/common/singularity.md

@@ -0,0 +1,27 @@
+# singularity
+
+> Manage Singularity containers and images.
+
+- Download a remote image:
+
+`singularity pull --name {{container.simg}} {{shub://vsoch/hello-world}}`
+
+- Rebuild a remote image using latest Singularity image format:
+
+`singularity build {{container.simg}} {{docker://godlovedc/lolcow}}`
+
+- Start a container from an image and get a shell inside of it:
+
+`singularity shell {{container.simg}}`
+
+- Start a container from an image and run a command:
+
+`singularity exec {{container.simg}} {{command}}`
+
+- Start a container from an image and execute the internal runscript:
+
+`singularity run {{container.simg}}`
+
+- Build a singularity image from a recipe file:
+
+`sudo singularity build {{container.simg}} {{recipe}}`