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dockerimages.md: fix "gem2.0: command not found"

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Boris Dušek 2016-10-23 13:30:46 +02:00 committed by GitHub
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engine/tutorials/dockerimages.md
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@ -189,7 +189,7 @@ you'd like to update.
Inside our running container first let's update Ruby:
root@0b2616b0e5a8:/# apt-get install -y ruby2.0-dev
root@0b2616b0e5a8:/# apt-get install -y ruby2.0-dev ruby2.0
Now let's add the `json` gem.