Readd SLE Micro version within image repository

Add again SLEMicro version within the repository to be sure we can still
make use of the 'latest' tag for each base distro version. Now it will
be dynamically computed from project configuration at the expense of
increasing _service file complexity in OBS.

Signed-off-by: David Cassany <dcassany@suse.com>

.obs/dockerfile/teal-iso/Dockerfile

@@ -1,13 +1,15 @@
 # SPDX-License-Identifier: Apache-2.0
-#!BuildTag: rancher/elemental-teal-iso:%VERSION%
-#!BuildTag: rancher/elemental-teal-iso:%VERSION%-%RELEASE%
+#!BuildTag: rancher/elemental-teal-iso/%%SLEMICRO_VERSION%%:latest
+#!BuildTag: rancher/elemental-teal-iso/%%SLEMICRO_VERSION%%:%VERSION%
+#!BuildTag: rancher/elemental-teal-iso/%%SLEMICRO_VERSION%%:%VERSION%-%RELEASE%
 #!BuildConstraint: hardware:disk:size unit=G 10
 #!BuildConstraint: hardware:memory:size unit=G 16
 
 ARG SLE_VERSION
+ARG SLEMICRO_VERSION
 
-FROM rancher/elemental-teal:latest AS os
-FROM rancher/elemental-builder-image:latest AS builder
+FROM rancher/elemental-teal/$SLEMICRO_VERSION:latest AS os
+FROM rancher/elemental-builder-image/$SLEMICRO_VERSION:latest AS builder
 
 WORKDIR /iso
 
@@ -22,8 +24,9 @@ RUN elemental --debug --config-dir . build-iso -o /output -n "elemental-teal.$(u
 FROM bci/bci-busybox:$SLE_VERSION
 COPY --from=builder /output /elemental-iso
 
-ARG BUILD_REPO=registry.suse.com
-ARG IMAGE_REPO=$BUILD_REPO/rancher/elemental-teal
+ARG SLEMICRO_VERSION
+ARG BUILD_REPO=%%IMG_REPO%%
+ARG IMAGE_REPO=$BUILD_REPO/rancher/elemental-teal-iso/$SLEMICRO_VERSION
 
 # Define labels according to https://en.opensuse.org/Building_derived_containers
 # labelprefix=com.rancher.elemental

.obs/dockerfile/teal-os/Dockerfile

@@ -1,7 +1,8 @@
 # SPDX-License-Identifier: Apache-2.0
 # Define the names/tags of the container
-#!BuildTag: rancher/elemental-teal:%VERSION%
-#!BuildTag: rancher/elemental-teal:%VERSION%-%RELEASE%
+#!BuildTag: rancher/elemental-teal/%%SLEMICRO_VERSION%%:latest
+#!BuildTag: rancher/elemental-teal/%%SLEMICRO_VERSION%%:%VERSION%
+#!BuildTag: rancher/elemental-teal/%%SLEMICRO_VERSION%%:%VERSION%-%RELEASE%
 #!BuildConstraint: hardware:disk:size unit=G 8
 
 ARG SLEMICRO_VERSION
@@ -21,8 +22,9 @@ RUN zypper in -y -- \
 # Install extra useful utilities
 RUN zypper in -y k9s
 
-ARG BUILD_REPO=registry.suse.com
-ARG IMAGE_REPO=$BUILD_REPO/rancher/elemental-teal
+ARG SLEMICRO_VERSION
+ARG BUILD_REPO=%%IMG_REPO%%
+ARG IMAGE_REPO=$BUILD_REPO/rancher/elemental-teal/$SLEMICRO_VERSION
 ARG IMAGE_TAG=%VERSION%-%RELEASE%
 
 # IMPORTANT: Setup elemental-release used for versioning/upgrade. The