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13 lines
272 B
YAML
13 lines
272 B
YAML
version: "2.1"
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services:
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web:
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# set value with default, default must be ignored
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image: ${IMAGE:-alpine}
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# unset value with default value
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ports:
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- "${HOST_PORT:-80}:8000"
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# unset value with empty default
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hostname: "host-${UNSET_VALUE:-}"
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