Unable to Shell into the container

[sushma-98]

Refer to the example from https://github.com/sylabs/examples/tree/master/database/mariadb.

Trying to shell into the container using: $ singularity shell --writable-tmpfs -B db/:/var/lib/mysql mariadb.sif

Error occured: /.singularity.d/actions/shell: 4: export: 177F4010FE56CA3336300305F1656F24C74CD1D8: bad variable name