[v2 2/2] Dockerfile: Populate a pip cache

[Tom Rini]

Given the number of jobs in CI we have which use python and pip install
packages, we should do this once in the Dockerfile, in order to populate
the cache. We let each job continue to create and use the virtual
environments they need to facilitate making updates to these
environments easier.

Signed-off-by: Tom Rini <trini at konsulko.com>
---
Changes in v2:
- Comment on why we wget
- Drop commented out portion
---
 tools/docker/Dockerfile | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index bd02531be249..20c2b2a9d64c 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -265,6 +265,17 @@ RUN echo uboot ALL=NOPASSWD: ALL > /etc/sudoers.d/uboot
 RUN useradd -m -U uboot
 USER uboot:uboot
 
+# Populate the cache for pip to use. Get these via wget as the
+# COPY / ADD directives don't work as we need them to.
+RUN wget -O /tmp/pytest-requirements.txt https://source.denx.de/u-boot/u-boot/-/raw/master/test/py/requirements.txt
+RUN wget -O /tmp/sphinx-requirements.txt https://source.denx.de/u-boot/u-boot/-/raw/master/doc/sphinx/requirements.txt
+RUN virtualenv -p /usr/bin/python3 /tmp/venv && \
+	. /tmp/venv/bin/activate && \
+	pip install -r /tmp/pytest-requirements.txt \
+		-r /tmp/sphinx-requirements.txt && \
+	deactivate && \
+	rm -rf /tmp/venv /tmp/pytest-requirements.txt /tmp/sphinx-requirements.txt
+
 # Create the buildman config file
 RUN /bin/echo -e "[toolchain]\nroot = /usr" > ~/.buildman
 RUN /bin/echo -e "kernelorg = /opt/gcc-12.2.0-nolibc/*" >> ~/.buildman
-- 
2.34.1