fix(server dockerfile): fix wait not available in the final runtime image

packages/server/Dockerfile

@@ -7,9 +7,6 @@ RUN apt-get update && apt-get install -y \
   fonts-dejavu-core fontconfig \
   && rm -rf /var/lib/apt/lists/*
 
-ADD https://github.com/ufoscout/docker-compose-wait/releases/download/2.8.0/wait /wait
-RUN chmod +x /wait
-
 WORKDIR /speckle-server
 
 COPY .yarnrc.yml .
@@ -30,6 +27,9 @@ ARG NODE_ENV=production
 ENV NODE_ENV=${NODE_ENV}
 ARG SPECKLE_SERVER_VERSION=custom
 
+ADD https://github.com/ufoscout/docker-compose-wait/releases/download/2.8.0/wait /wait
+RUN chmod +x /wait
+
 WORKDIR /speckle-server
 
 COPY --from=build-stage /speckle-server/.yarnrc.yml .