tag with latest as well for axolotl-runpod (#418)

* tag with latest as well for axolotl-runpod

* no dev branch for now

.github/workflows/main.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - "main"
-      - "dev"
 
 jobs:
   build-axolotl:
@@ -72,6 +71,7 @@ jobs:
             python_version: "3.10"
             pytorch: 2.0.1
             axolotl_extras:
+            is_latest: true
           - cuda: 118
             cuda_version: 11.8.0
             python_version: "3.9"
@@ -102,5 +102,7 @@ jobs:
             CUDA=${{ matrix.cuda }}
           file: ./docker/Dockerfile-runpod
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.metadata.outputs.tags }}-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}${{ matrix.axolotl_extras != '' && '-' || '' }}${{ matrix.axolotl_extras }}
+          tags: |
+             ${{ steps.metadata.outputs.tags }}-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}${{ matrix.axolotl_extras != '' && '-' || '' }}${{ matrix.axolotl_extras }}
+             ${{ (matrix.is_latest) && format('{0}:latest', steps.metadata.outputs.image) || '' }}
           labels: ${{ steps.metadata.outputs.labels }}