docs: update diff

README.md

@@ -22,18 +22,18 @@ How to do it, you ask? Abandon all hope. Computers were a mistake.
 
 ```diff
 diff --git a/Dockerfile b/Dockerfile
-index cbcdb2034..a159ee0de 100644
+index cbcdb2034..5dc1acc2f 100644
 --- a/Dockerfile
 +++ b/Dockerfile
-@@ -111,6 +111,8 @@ RUN cd ~ && \
-        OTP_SECRET=precompile_placeholder SECRET_KEY_BASE=precompile_placeholder rails assets:precompile && \
-        yarn cache clean
+@@ -59,6 +59,8 @@ RUN cd /opt/mastodon && \
+        bundle install -j"$(nproc)" && \
+        yarn install --pure-lockfile
 
-+RUN cat /etc/ssl/certs/ca-certificates.crt > vendor/bundle/ruby/2.7.0/gems/httpclient-2.8.3/lib/httpclient
++RUN cat /etc/ssl/certs/ca-certificates.crt > /opt/mastodon/vendor/bundle/ruby/2.7.0/gems/httpclient-2.8.3/lib/httpclient/cacert.pem
 +
- # Set the work dir and the container entry point
- WORKDIR /opt/mastodon
- ENTRYPOINT ["/usr/bin/tini", "--"]
+ FROM ubuntu:20.04
+
+ # Copy over all the langs needed for runtime
 diff --git a/Gemfile.lock b/Gemfile.lock
 index a01341fc9..573c8e776 100644
 --- a/Gemfile.lock