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Add documention for key-only environment
Signed-off-by: Ryan Brainard <brainard@heroku.com>
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@ -55,8 +55,11 @@ volumes:
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- cache/:/tmp/cache
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- cache/:/tmp/cache
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-- Add environment variables.
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-- Add environment variables.
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-- Environment variables with only a key are resolved to values on the host
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-- machine, which can be helpful for secret or host-specific values.
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environment:
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environment:
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RACK_ENV: development
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RACK_ENV: development
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SESSION_SECRET:
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```
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```
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-- Networking mode. Use the same values as the docker client --net parameter
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-- Networking mode. Use the same values as the docker client --net parameter
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