[Xen-devel] [PATCH v3 1/8] ci: add README and makefile for containers

[Doug Goldstein <cardoe@xxxxxxxxxx>]

Add a basic README explaining the containers and how people can use them
to locally test with if they see an error in CI and want to reproduce it
locally. Added a makefile to help with building and pushing the
containers to the container registry.

Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 automation/build/Makefile  | 17 +++++++++++++++++
 automation/build/README.md | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 automation/build/Makefile
 create mode 100644 automation/build/README.md

diff --git a/automation/build/Makefile b/automation/build/Makefile
new file mode 100644
index 0000000..773b160
--- /dev/null
+++ b/automation/build/Makefile
@@ -0,0 +1,17 @@
+
+# the base of where these containers will appear
+REGISTRY := registry.gitlab.com/xen-project/xen
+
+help:
+       @echo "Builds containers for building Xen based on different distros"
+       @echo "To build one run 'make DISTRO/VERSION'. Available containers:"
+       @$(foreach file,$(sort $(subst .dockerfile,,$(wildcard 
*/*.dockerfile))), \
+               echo ${file} ; \
+       )
+       @echo "To push container builds, set the env var PUSH"
+
+%: %.dockerfile ## Builds containers
+       docker build -t $(REGISTRY)/$(@D):$(@F) -f $< $(<D)
+       @if [ ! -z $${PUSH+x} ]; then \
+               docker push $(REGISTRY)/$(@D):$(@F); \
+       fi
diff --git a/automation/build/README.md b/automation/build/README.md
new file mode 100644
index 0000000..0206d57
--- /dev/null
+++ b/automation/build/README.md
@@ -0,0 +1,34 @@
+Docker Containers
+=================
+
+These Docker containers should make it possible to build Xen in
+any of the available environments on any system that supports
+running Docker. They are organized by distro and tagged with
+the version of that distro. They are available from the GitLab
+Container Registry under the Xen project at:
+
+registry.gitlab.com/xen-project/xen/DISTRO:VERSION
+
+To see the list of available containers run `make` in this
+directory. You will have to replace the `/` with a `:` to use
+them.
+
+Building Xen
+------------
+
+From the top level of the source tree it should be possible to
+run the following:
+
+docker run --rm -it -v $(PWD):/build -u $(id -u) -e CC=gcc $(CONTAINER) make
+
+There are other modifications that can be made but this will run
+the `make` command inside the specified container. It will use your
+currently checked out source tree to build with, ensure that file
+permissions remain consistent and clean up after itself.
+
+Building a container
+--------------------
+
+There is a makefile to make this process easier. You should be
+able to run `make DISTRO/VERSION` to have Docker build the container
+for you.
-- 
git-series 0.9.1

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