gitlab: Extract core container jobs to container-core.yml

It is not possible to use the previously extracted templates
without this set of core containers. Extract them into a new
file (container-core.yml) to be able to build them without
having to build all the other containers by default.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-10-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/container-core.yml

+include:
+  - local: '/.gitlab-ci.d/container-template.yml'
+
+amd64-centos8-container:
+  extends: .container_job_template
+  variables:
+    NAME: centos8
+
+amd64-fedora-container:
+  extends: .container_job_template
+  variables:
+    NAME: fedora
+
+amd64-debian10-container:
+  extends: .container_job_template
+  variables:
+    NAME: debian10

.gitlab-ci.d/containers.yml

 include:
-  - local: '/.gitlab-ci.d/container-template.yml'
+  - local: '/.gitlab-ci.d/container-core.yml'
 
 amd64-alpine-container:
   extends: .container_job_template
@@ -11,16 +11,6 @@ amd64-centos7-container:
   variables:
     NAME: centos7
 
-amd64-centos8-container:
-  extends: .container_job_template
-  variables:
-    NAME: centos8
-
-amd64-debian10-container:
-  extends: .container_job_template
-  variables:
-    NAME: debian10
-
 amd64-debian11-container:
   extends: .container_job_template
   variables:
@@ -211,11 +201,6 @@ cris-fedora-cross-container:
   variables:
     NAME: fedora-cris-cross
 
-amd64-fedora-container:
-  extends: .container_job_template
-  variables:
-    NAME: fedora
-
 i386-fedora-cross-container:
   extends: .container_job_template
   variables: