diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 952c9db8..b6a27807 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,6 +18,8 @@ on:
             - "resources/docker/docker/*"
             - "resources/development/*"
             - "resources/demo/*"
+            - "Dockerfile"
+            - "demo.Dockerfile"
     pull_request:
         types: [ opened, synchronize, reopened ]
         paths:
diff --git a/demo.Dockerfile b/demo.Dockerfile
index 8d2e7e41..28ce2b72 100644
--- a/demo.Dockerfile
+++ b/demo.Dockerfile
@@ -16,8 +16,8 @@ RUN echo 'longrun' > /etc/s6-overlay/s6-rc.d/nginx-ui/type && \
     touch /etc/s6-overlay/s6-rc.d/user/contents.d/nginx-ui
 
 # copy nginx config
-COPY resources/docker/nginx.conf /usr/local/etc/nginx/nginx.conf
-COPY resources/docker/nginx-ui.conf /usr/local/etc/nginx/conf.d/nginx-ui.conf
+COPY resources/docker/nginx.conf /etc/nginx/nginx.conf
+COPY resources/docker/nginx-ui.conf /etc/nginx/conf.d/nginx-ui.conf
 
 # copy nginx-ui executable binary
 COPY nginx-ui-$TARGETOS-$TARGETARCH$TARGETVARIANT/nginx-ui /usr/local/bin/nginx-ui