Update heimdalldashboard-install.sh

tweak install

install/heimdalldashboard-install.sh

@@ -29,6 +29,9 @@ tar xzf ${RELEASE}.tar.gz
 VER=$(curl -s https://api.github.com/repos/linuxserver/Heimdall/releases/latest | grep "tag_name" | awk '{print substr($2, 3, length($2)-4) }')
 rm -rf ${RELEASE}.tar.gz
 mv Heimdall-${VER} /opt/Heimdall
+cd /opt/Heimdall
+cp .env.example .env
+$STD php artisan key:generate
 msg_ok "Installed Heimdall Dashboard ${RELEASE}"
 
 msg_info "Creating Service"