diff --git a/src/Dockerfile b/src/Dockerfile
index b059d3e..c01304f 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -6,7 +6,8 @@ RUN apt-get update && apt-get install unzip -y
 
 WORKDIR /src
 
-RUN curl -L https://raw.githubusercontent.com/DuendeSoftware/IdentityServer.Quickstart.UI/main/getmain.sh | bash
+COPY ./getui.sh ./getui.sh
+RUN ./getui.sh
 
 COPY ./OpenIdConnectServerMock.csproj ./OpenIdConnectServerMock.csproj
 RUN dotnet restore
diff --git a/src/getui.sh b/src/getui.sh
new file mode 100755
index 0000000..2d37735
--- /dev/null
+++ b/src/getui.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -e
+
+TAG="6.3.0"
+
+SOURCE="https://github.com/DuendeSoftware/IdentityServer.Quickstart.UI/archive/refs/tags/$TAG.zip"
+curl -L -o ui.zip "$SOURCE"
+
+unzip -d ui ui.zip
+
+[[ -d Pages ]] || mkdir Pages
+[[ -d wwwroot ]] || mkdir wwwroot
+
+cp -r ./ui/IdentityServer.Quickstart.UI-$TAG/Pages/* Pages
+cp -r ./ui/IdentityServer.Quickstart.UI-$TAG/wwwroot/* wwwroot
+
+rm -rf ui ui.zip