FEAT-052: Obtain current branch sensibly.

Author: mvousden

jobs/hook_container.yml

@@ -28,7 +28,7 @@
   register: version
 
 - name: Obtain current branch of this repository.
-  shell: git describe --all | grep -o [^/]*$
+  shell: git symbolic-ref HEAD | grep -o [^/]*$
   args:
     chdir: "{{ container_dir }}"
     executable: /bin/bash
@@ -66,7 +66,7 @@
 
 # Storing container with tag=tag.
 
-- name: Define the name used for the output Docker image using the branch.
+- name: Define the name used for the output Docker image using the tag.
   set_fact:
     output_image_name_tag: virtualmicromagnetics/{{ container_name }}:{{ tag.stdout }}
   when: tag.stdout != "undefined"
@@ -75,7 +75,7 @@
   command: docker commit {{ container_name }} {{ output_image_name_tag }}
   when: tag.stdout != "undefined"
 
-- name: Push the Docker image with tag equal to branch.
+- name: Push the Docker image with tag equal to tag.
   command: docker push {{ output_image_name_tag }}
   when: container_push and (tag.stdout != "undefined")