Update Docker image release logic so that we can release new images t…

…o prod from workflow_dispatch (#763)

.github/workflows/docker.yaml

@@ -69,19 +69,17 @@ jobs:
         GIT_SHA=$(echo ${{ github.sha }} | cut -c1-7)
         echo "IMAGE_TAG=${GIT_SHA}" >> ${GITHUB_ENV}
 
-        if [ "${{ github.event_name }}" == "push" ]; then
-          echo "Triggered by push event."
-          PROD_REPO="mosaicml/llm-foundry"
-          IMAGE_TAG="${PROD_REPO}:${{matrix.name}}-${GIT_SHA},${PROD_REPO}:${{matrix.name}}-latest"
-          IMAGE_CACHE="${PROD_REPO}:${{matrix.name}}-buildcache"
-        elif [ "${{ github.event_name }}" == "pull_request" ]; then
+        if [ "${{ github.event_name }}" == "pull_request" ]; then
           echo "Triggered by pull_request event."
           STAGING_REPO="mosaicml/ci-staging"
           IMAGE_TAG="${STAGING_REPO}:${{matrix.name}}-${GIT_SHA}"
           IMAGE_CACHE="${STAGING_REPO}:${{matrix.name}}-buildcache"
         else
-          echo "Triggered by unknown event: ${{ github.event_name }}"
-          exit 1
+          # Triggered by push or workflow_dispatch event
+          echo "Triggered by ${{ github.event_name }} event, releasing to prod"
+          PROD_REPO="mosaicml/llm-foundry"
+          IMAGE_TAG="${PROD_REPO}:${{matrix.name}}-${GIT_SHA},${PROD_REPO}:${{matrix.name}}-latest"
+          IMAGE_CACHE="${PROD_REPO}:${{matrix.name}}-buildcache"
         fi
 
         echo "IMAGE_TAG=${IMAGE_TAG}" >> ${GITHUB_ENV}