Try installing opam dependencies for pin-depends in deploy

Dockerfile

@@ -3,10 +3,9 @@ RUN sudo apt-get update && sudo apt-get install autoconf automake -y --no-instal
 RUN mkdir -p /home/opam/www/mirage
 WORKDIR /home/opam/www
 RUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam && cd ~/opam-repository && git pull origin master && git reset --hard 30b1b97d735732e40996cf2e6b06d478ac40633f && opam update
-RUN opam pin tailwindcss.dev https://github.com/tmattio/opam-tailwindcss/archive/3e60fc32bbcf82525999d83ad0f395e16107026b.tar.gz
-RUN opam install mirage
 COPY --chown=opam:root mirage/config.ml /home/opam/www/mirage/
 COPY --chown=opam:root mirageio.opam /home/opam/www/
+RUN opam install -y --deps-only .
 ARG TARGET=unix
 ARG EXTRA_FLAGS=
 RUN opam exec -- mirage configure -f mirage/config.ml -t $TARGET $EXTRA_FLAGS