E ai,mano! blz!!
Eu ralei para instalar o SGA 2.0
E conseguir instalar atravez de cara aqui

https://discuss.novosga.org/d/173-tutorial-de-instala-o-novosga-2-0-3-com-docker
***Os passos que fiz para conseguir foi instalar o DOCKER E COMPOSER *
**** e criei uma passa no ternimal do link assim:

" nano docker-compose.yml "
quando abriu a o nano colei (shift+insert)esse codigo na pasta:

version: '2'

services:
novosga:
image: novosga/novosga:latest
restart: always
depends_on:
- mysqldb
ports:
- "80:80"
- "2020:2020"
environment:
APP_ENV: 'prod'

database connection

DATABASE_URL: 'mysql://novosga:MySQL_App_P4ssw0rd!@mysqldb:3306/novosga2?charset=utf8mb4&serverVersion=5.7'

default admin user

NOVOSGA_ADMIN_USERNAME: 'admin'
NOVOSGA_ADMIN_PASSWORD: '123456'
NOVOSGA_ADMIN_FIRSTNAME: 'Administrator'
NOVOSGA_ADMIN_LASTNAME: 'Global'

default unity

NOVOSGA_UNITY_NAME: 'My Unity'
NOVOSGA_UNITY_CODE: 'U01'

default no-priority

NOVOSGA_NOPRIORITY_NAME: 'Normal'
NOVOSGA_NOPRIORITY_DESCRIPTION: 'Normal service'

default priority

NOVOSGA_PRIORITY_NAME: 'Priority'
NOVOSGA_PRIORITY_DESCRIPTION: 'Priority service'

default place

NOVOSGA_PLACE_NAME: 'Box'

Set TimeZone and locale

TZ: 'America/Sao_Paulo'
LANGUAGE: 'pt_BR'
mysqldb:
image: mysql:5.7
restart: always
environment:
MYSQL_USER: 'novosga'
MYSQL_DATABASE: 'novosga2'
MYSQL_ROOT_PASSWORD: 'MySQL_r00t_P4ssW0rd!'
MYSQL_PASSWORD: 'MySQL_App_P4ssw0rd!'

Set TimeZone

TZ: 'America/Sao_Paulo'

E salva e fecha a pasta e depois digita no terminal isso aqui : docker-compose up.

PRONTO!! SÒ ACESSAR O SGA