b08492b35c
In older versions of the pip tool, there is a known bug with the dependency resolver that causes some package installations to take much longer than expected due to various version and compatibility checks done during this process ([1] and [2]). Since the newer versions of the tool bring improvements to the dependency resolver, updating it helps to avoid scenarios like the ones described above. Thus, this patch adds a build argument called UPGRADE_PIP_PACKAGES which, when filled, allows LOCI to perform a `pip install --upgrade` on the listed packages before proceeding with the installation of the others. [1] https://github.com/pypa/pip/issues/10967 [2] https://github.com/pypa/pip/issues/9517 Test Plan: PASS: While building any image, verify in the output that the new patch is being applied on top of LOCI's Dockerfile: `Applying: Add build argument to allow pip upgrade`. (This step is performed regardless of the BUILDER type) PASS: While building any loci-based image that DOES NOT use the build argument UPGRADE_PIP_PACKAGES, verify in the output that pip isn't upgrading itself or upgrading other packages before the installation step. PASS: While building any loci-based image that DOES use the build argument UPGRADE_PIP_PACKAGES, verify in the output that pip is upgrading the listed packages before the installation step. Signed-off-by: Luan Nunes Utimura <LuanNunes.Utimura@windriver.com> Change-Id: I0e742e804746bf5f3f99fed181dd868c10fdf75b