baude d92650a922 use layer cache when building images ... to more closely mimic docker default behavior, the --layers cli option is set to true by default for podman. the buildah environment variable of BUILDAH_LAYERS is still honored and will override the command line input. this should be considered in place of PR #1383. Many thanks for Scott McCarty for inspiring this welcome change. Signed-off-by: baude <bbaude@redhat.com> Closes: #1422 Approved by: rhatdan		2018-09-07 12:57:09 +00:00
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common.go	use layer cache when building images	2018-09-07 12:57:09 +00:00