correcting buildcache step

action.yml

@@ -16,7 +16,7 @@ inputs:
   push-to-build-cache:
     description: 'Whether to push specs to build cache after a successful build'
     required: false
-    default: false
+    default: 'false'
   build-cache-token:
     description: 'Token to use to push into the build cache'
     required: false
@@ -50,11 +50,11 @@ runs:
       spack -e "$GITHUB_ACTION_PATH" install
 
   - name: Push packages to buildcache and update index
-    if: ${{ inputs.push-to-build-cache }}
+    if: ${{ inputs.push-to-build-cache == 'true' }}
     shell: bash
     run: |
       spack -e "$GITHUB_ACTION_PATH" mirror set --push \
             --oci-username ${{ github.actor }} \
             --oci-password "${{ inputs.build-cache-token }}" mochi-buildcache
-            spack -e tests buildcache push --base-image ubuntu:22.04 \
+      spack -e "$GITHUB_ACTION_PATH" buildcache push --base-image ubuntu:22.04 \
             --unsigned --update-index mochi-buildcache