Coerce strings into booleans

Author: brianhlin

action.yml

@@ -81,7 +81,11 @@ runs:
   - uses: actions/checkout@v2
 
   - name: Check input requirements
-    if: inputs.push_image && inputs.registry_url && inputs.registry_user && ! inputs.registry_pass
+    if: >-
+      fromJSON(inputs.push_image)
+      && ( ! inputs.registry_url
+      || ! inputs.registry_user
+      || ! inputs.registry_pass)
     shell: bash
     run: |
       echo "::error ::'push_image' specified but missing 'registry_url', 'registry_user', or 'registry_pass'"
@@ -129,7 +133,7 @@ runs:
     uses: docker/setup-buildx-action@v1
 
   - name: Container Registry Login
-    if: inputs.push_image
+    if: fromJSON(inputs.push_image)
     uses: docker/login-action@v1
     with:
       registry: ${{ inputs.registry_url }}
@@ -139,7 +143,7 @@ runs:
   - name: Build and push Docker images
     uses: docker/[email protected]
     with:
-      push: ${{ inputs.push_image }}
+      push: ${{ fromJSon(inputs.push_image) }}
       context: ${{ inputs.context }}
       build-args: |
         BASE_YUM_REPO=${{ inputs.osg_repo }}
@@ -150,7 +154,7 @@ runs:
       cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
 
   - name: Cache Docker images
-    if: inputs.cache_image
+    if: fromJSON(inputs.cache_image)
     uses: actions/cache@v2
     with:
       path: /tmp/.buildx-cache