Remove token commands from dockerfile

Author: sigurdm

pkg/image_proxy/Dockerfile

@@ -1,8 +1,6 @@
 # Use latest stable channel SDK.
 FROM dart:3.9.0 AS build
 
-ARG token
-
 ENV PUB_ENVIRONMENT="bot"
 ENV PUB_CACHE="/project/.pub-cache"
 
@@ -17,7 +15,6 @@ RUN dart compile exe pkg/image_proxy/bin/server.dart -o server
 FROM scratch
 COPY --from=build /runtime/ /
 COPY --from=build /app/server /app/bin/
-RUN echo $token > token
 
 # Start server.
 EXPOSE 8080