* compress post processor: add bzip2 + tests
* post-processor/compress/post-processor_test.go: refactor tests and add tests for bzip2
* post-processor_test.go: test write/read for all compression algos
* check artifact.Destroy() errors
* close archive before deleting it
Co-authored-by: Adrien Delorme <azr@users.noreply.github.com>
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same.
* removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context.
* on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors.
* added unit tests for step_download that are now CI tested on windows, mac & linux.
* files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension`
* since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted.
* a download file is protected and locked by a file lock,
* updated docs
* updated go modules and vendors
Daniel Finneran
Adrien Delorme
Chris Lundquist