Update oraclelinux tag to new slim base image

Oracle have released a slimmed down version of their base image, using
the tag '7-slim'[0]. This is over half the size of the standard image.

Note, right now the default base tags are also used to check that we're
building on a supported distro version, e.g. oraclelinux:7.  This breaks
when we want to set a default base tag that is different to what's in
/etc/system-release or /etc/lsb-release, e.g. 7-slim.  Decouple this
info so we have access to both sets of data.

[0] https://blogs.oracle.com/developers/put-your-containers-on-a-diet-with-oracle-linux

Depends-On: Id7df645284f260cd615188db2efe889c9cf8115d
Change-Id: I584ac9514950c541005bb900c19fc1c6c7ed2a5d

1 files changed, 8 insertions, 1 deletions

diff --git a/kolla/common/config.py b/kolla/common/config.py
index e5a3cedfa..e87d509f5 100755
--- a/kolla/common/config.py
+++ b/kolla/common/config.py
@@ -20,6 +20,13 @@ from kolla.version import version_info as version
 
 BASE_OS_DISTRO = ['centos', 'rhel', 'ubuntu', 'oraclelinux', 'debian']
 BASE_ARCH = ['x86_64']
+DEFAULT_BASE_TAGS = {
+    'centos': '7',
+    'rhel': '7',
+    'oraclelinux': '7-slim',
+    'debian': '8',
+    'ubuntu': '16.04',
+}
 DISTRO_RELEASE = {
     'centos': '7',
     'rhel': '7',
@@ -847,7 +854,7 @@ def parse(conf, args, usage=None, prog=None,
 
     # NOTE(jeffrey4l): set the default base tag based on the
     # base option
-    conf.set_default('base_tag', DISTRO_RELEASE.get(conf.base))
+    conf.set_default('base_tag', DEFAULT_BASE_TAGS.get(conf.base))
 
     if not conf.base_image:
         conf.base_image = conf.base