support nested variable interpolation#1419
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blechschmidt-ldc wants to merge 1 commit intocontainers:mainfrom
Open
support nested variable interpolation#1419blechschmidt-ldc wants to merge 1 commit intocontainers:mainfrom
blechschmidt-ldc wants to merge 1 commit intocontainers:mainfrom
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This commit adds support for nested variable interpolation. Instead of relying on regular expressions with which adhering to the Compose spec will be impossible, lookaheads for matching closing brackets are performed. In addition, support for alternative values (:+ and + operators) is added and the full interpolation feature set described at https://github.com/docker/docs/blob/050f15d67d5956e8a48f8b92c9449c21bc3207cb/content/reference/compose-file/interpolation.md is implemented. Signed-off-by: Birk Blechschmidt <birk.blechschmidt@liebherr.com>
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This commit adds support for nested variable interpolation. Instead of relying on regular expressions with which adhering to the Compose spec will be impossible, lookaheads for matching closing brackets are performed. In addition, support for alternative values (:+ and + operators) is added and the full interpolation feature set described at https://github.com/docker/docs/blob/050f15d67d5956e8a48f8b92c9449c21bc3207cb/content/reference/compose-file/interpolation.md is implemented.