Update docs for version being a string.
Signed-off-by: Daniel Nephin <dnephin@docker.com>
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3 changed files with 13 additions and 13 deletions
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@ -32,7 +32,7 @@ they can be run together in an isolated environment.
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A `docker-compose.yml` looks like this:
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version: 2
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version: '2'
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services:
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web:
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build: .
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