Read any matching secrets as env variable during build

.drone.yml

@@ -22,6 +22,13 @@ steps:
       - yarn --version
       - yarn
       - yarn build
+    environment:
+      ELASTIC:
+        from_secret: ELASTIC
+      ELASTIC_INDEX:
+        from_secret: ELASTIC_INDEX
+      SEASONED_API:
+        from_secret: SEASONED_API
 
   - name: Lint project using eslint
     image: node:18.2.0