revert: undo OnlyOffice install-during-build changes

Restores repository state to match 902a4b1 (cryptpad 2026.2.2).

Author: gcordalis

Dockerfile

@@ -9,8 +9,3 @@ RUN git clone https://github.com/cryptpad/sso/
 
 # Revert working directory to the root of the cryptpad project
 WORKDIR /cryptpad
-
-# Pre-install OnlyOffice assets during build and replace script with no-op
-# to prevent the entrypoint from re-running the lengthy install at startup
-RUN ./install-onlyoffice.sh --accept-license --trust-repository \
- && echo '#!/bin/bash' > ./install-onlyoffice.sh