Sets COMPUTE_COOKIE variable with cookie returned by Oracle Compute Cloud REST API:
export COMPUTE_COOKIE="`curl -i -X POST -H "Content-Type: application/oracle-compute-v3+json" -d '{"user":"/Compute-DOMAIN/user@example.com","password":"PASSWORD"}' https://api-z26.compute.em3.oraclecloud.com/authenticate/ | grep Set-Cookie | cut -c13-`"