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#!/bin/bash
#
# build-testimage - script for producing a test image for podman CI
#
# The idea is to have a small multi-purpose image that can be pulled once
# by system tests and used for as many tests as possible. This image
# should live on quay.io, should be small in size, and should include
# as many components as needed by system tests so they don't have to
# pull other images.
#
# Unfortunately, "small" is incompatible with "systemd" so tests
# still need a fedora image for that.
#
# Tag for this new image
YMD=$(date +%Y%m%d)
# git-relative path to this script
create_script=$(cd $(dirname $0) && git ls-files --full-name $(basename $0))
if [ -z "$create_script" ]; then
create_script=$0
fi
# Creation timestamp, Zulu time
create_time_z=$(env TZ=UTC date +'%Y-%m-%dT%H:%M:%SZ')
set -ex
# We'll need to create a Containerfile plus various other files to add in
#
# Please document the reason for all flags, apk's, and anything non-obvious
tmpdir=$(mktemp -t -d $(basename $0).tmp.XXXXXXX)
cd $tmpdir
# 'image mount' test will confirm that this file exists and has our YMD tag
echo $YMD >testimage-id
# 'pod' test will use this for --infra-command
cat >pause <<EOF
#!/bin/sh
#
# Trivial little pause script, used in one of the pod tests
#
echo Confirmed: testimage pause invoked as \$0
while :; do
sleep 0.1
done
EOF
chmod 755 pause
# alpine because it's small and light and reliable
# busybox-extras provides httpd needed in 500-networking.bats
cat >Containerfile <<EOF
FROM docker.io/library/alpine:3.12.0
RUN apk add busybox-extras
ADD testimage-id pause /home/podman/
LABEL created_by=$create_script
LABEL created_at=$create_time_z
WORKDIR /home/podman
CMD ["/bin/echo", "This container is intended for podman CI testing"]
EOF
# --squash-all : needed by 'tree' test in 070-build.bats
podman rmi -f testimage &> /dev/null || true
podman build --squash-all -t testimage .
# Clean up
cd /tmp
rm -rf $tmpdir
# Tag and push to quay.
podman tag testimage quay.io/libpod/testimage:$YMD
podman push quay.io/libpod/testimage:$YMD
# Side note: there should always be a testimage tagged ':00000000'
# (eight zeroes) in the same location; this is used by tests which
# need to pull a non-locally-cached image. This image will rarely
# if ever need to change, nor in fact does it even have to be a
# copy of this testimage since all we use it for is 'true'.
#
# As of 2020-09-02 it is simply busybox, because it is super small:
#
# podman pull docker.io/library/busybox:1.32.0
# podman tag docker.io/library/busybox:1.32.0 \
# quay.io/libpod/testimage:00000000
# podman push quay.io/libpod/testimage:00000000
#
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