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2b17f4c8a8
`--label-file` has the exact same behavior as `--env-file`, meaning any placeholder (i.e. a simple key, no `=` sign, no value), it will get the value from the environment variable. For `--label-file` it should just add an empty label. Signed-off-by: Vincent Demeester <vincent@sbr.pm>
23 lines
863 B
Go
23 lines
863 B
Go
package opts
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import (
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"os"
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)
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// ParseEnvFile reads a file with environment variables enumerated by lines
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//
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// ``Environment variable names used by the utilities in the Shell and
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// Utilities volume of IEEE Std 1003.1-2001 consist solely of uppercase
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// letters, digits, and the '_' (underscore) from the characters defined in
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// Portable Character Set and do not begin with a digit. *But*, other
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// characters may be permitted by an implementation; applications shall
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// tolerate the presence of such names.''
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// -- http://pubs.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap08.html
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//
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// As of #16585, it's up to application inside docker to validate or not
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// environment variables, that's why we just strip leading whitespace and
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// nothing more.
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func ParseEnvFile(filename string) ([]string, error) {
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return parseKeyValueFile(filename, os.Getenv)
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}
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