Unable to install pip in Docker -

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unable install pip in docker running ubuntu version 14.04. see below log.

root@57da7dd8a590:/usr/bin# apt-get install pip reading package lists... done building dependency tree reading state information... done e: unable locate package pip root@57da7dd8a590:/usr/bin#

did apt-get update before that?

and then

apt-get -y install python-pip

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