Element Synapse: switched from development to production mode and fixed update (#5066)

* Update elementsynapse.sh

* Update elementsynapse-install.sh

* Update elementsynapse.sh

removed comment

install/elementsynapse-install.sh

@@ -54,7 +54,12 @@ RELEASE=$(curl -fsSL https://api.github.com/repos/etkecc/synapse-admin/releases/
 curl -fsSL "https://github.com/etkecc/synapse-admin/archive/refs/tags/v${RELEASE}.tar.gz" -o "$temp_file"
 tar xzf "$temp_file" -C /opt/synapse-admin --strip-components=1
 cd /opt/synapse-admin
+$STD yarn global add serve
 $STD yarn install --ignore-engines
+$STD yarn build
+mv ./dist ../ && \
+  rm -rf * && \
+  mv ../dist ./
 msg_ok "Installed Element Synapse"
 
 msg_info "Creating Service"
@@ -67,7 +72,7 @@ Requires=matrix-synapse.service
 [Service]
 Type=simple
 WorkingDirectory=/opt/synapse-admin
-ExecStart=/usr/bin/yarn start --host
+ExecStart=/usr/local/bin/serve -s dist -l 5173
 Restart=always
 
 [Install]