A question about php in a jail

[James B. Byrne]

This past week I have been setting up a jail for a drupal7 website.  I
am now at the point where I need to update the modules and I would
like to employ the drush cli utility.  To install this on a Drupal7
website it is suggested to run this command in the Drupal document
root:


php -r
"readfile('https://s3.amazonaws.com/files.drush.org/drush.phar');" >
drush

However, when I run this inside the jail then I see this error,

PHP Warning:  readfile(): Unable to find the wrapper "https" - did you
forget to enable it when you configured PHP? in Command line code on
line 1
PHP Warning: 
readfile(https://s3.amazonaws.com/files.drush.org/drush.phar): failed
to open stream: No such file or directory in Command line code on line
1.

If I run the same command on the host system of the jail then I do not
get this error.  What am I missing with respect to the jailed setup?

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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
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