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@ -173,7 +173,7 @@ child container in two ways:
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Let's look first at the environment variables Docker sets. Let's run the `env`
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command to list the container's environment variables.
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$docker run --rm --link --name web2 db:db training/webapp env
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$ sudo docker run --rm --name web2 --link db:db training/webapp env
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. . .
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DB_NAME=/web2/db
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DB_PORT=tcp://172.17.0.5:5432
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