bundleとtootctlの起動に関する部分を調整した

Dockerfile

@@ -60,14 +60,16 @@ RUN apt update && \
 	make install && \
 	cd .. && rm -rf ruby-$RUBY_VER.tar.gz ruby-$RUBY_VER
 
-ENV PATH="${PATH}:/opt/ruby/bin:/opt/node/bin"
+ENV PATH="/opt/ruby/bin:/opt/node/bin:${PATH}"
 
 RUN npm install -g yarn && \
         gem install bundler && \
 	apt update && \
 	apt -y install git libicu-dev libidn11-dev \
 	libpq-dev libprotobuf-dev protobuf-compiler
 
+## RUN gem install --install-dir /opt/ruby/lib/ruby/site_ruby/2.6.0 bundler
+
 COPY Gemfile* package.json yarn.lock /opt/mastodon/
 
 RUN cd /opt/mastodon && \
@@ -84,7 +86,7 @@ COPY --from=build-dep /opt/ruby /opt/ruby
 COPY --from=build-dep /opt/jemalloc /opt/jemalloc
 
 # Add more PATHs to the PATH
-ENV PATH="${PATH}:/opt/ruby/bin:/opt/node/bin:/opt/mastodon/bin"
+ENV PATH="/opt/mastodon/bin:/opt/ruby/bin:/opt/node/bin:${PATH}"
 
 # Create the mastodon user
 ARG UID=991