Increase shm-size to bypass Python installation deadlock

Just trying random stuff at this point.  The fact is this works outside
of a container environment, so I'm just looking at limitations put in
place by the container.

.gitlab-ci.yml

@@ -13,8 +13,8 @@ default:
     QEMU_ARCH: 'x86_64'
   script: &script
     - 'mkdir debug'
-    - 'buildah bud --cap-add SYS_ADMIN
-                   --security-opt seccomp=unconfined
+    - 'buildah bud --security-opt seccomp=unconfined
+                   --shm-size 1g
                    --ulimit nofile=1048576
                    --build-arg STAGE0_TAG="$CPU"
                    --build-arg FACTER_emerge_default_opts="$CI_HOST_EMERGE_DEFAULT_OPTS"