ENV scoped per build-stage moby/moby#37345 (comment)

jsueling · Jan 15, 2022 · 65c27ed · 65c27ed
1 parent 0e82f05
commit 65c27ed
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/todo-app/todo-frontend/Dockerfile b/todo-app/todo-frontend/Dockerfile
@@ -8,8 +8,9 @@ RUN npm ci
 
 RUN npm run build
 
-ENV REACT_APP_BACKEND_URL=http://localhost:3000/
-
+# ENV scoped per build-stage https://github.com/moby/moby/issues/37345#issuecomment-400245466
 FROM nginx:1.20-alpine
 
-COPY --from=build-stage /usr/src/app/build /usr/share/nginx/html
+COPY --from=build-stage /usr/src/app/build /usr/share/nginx/html
+
+ENV REACT_APP_BACKEND_URL=http://localhost:3000/