DeployPhoenixApp_withNginx.txt

sudo apt install git
ssh-keygen
cat /home/user/.ssh/id_rsa.pub
copy the content
go to the github.com/user/myapp-repository/settings
  ADD DEPLOY KEY
git clone git@github.com:user/myapp-repository.git
cd myapp
git pull
Already up to date.
mix deps.get   (to grab the dependencies)
Shall I install Hex (package manager)?; Yes
cd assets
npm install
more package.json
 CHECK webpack and webpack-cli are required
sudo npm install -g webpack
sudo npm install -g webpack-cli
cd..
more config/prod.exs
 CHECK import_config "prod.secret.exs"
----------------------------------------
nano config/prod.secret.exs
  use Mix.config
  # Database settings:
  config :myappp, Myapp.Repo,
          host: "127.0.01",
          port: 3306,
          database: "phoenix_database",
          username: "root",
          passsword: "some_password",
          pool_size: 10
  # Web Endpoint settings:
  config :myapp, MyappWeb.Endpoint  # add Web word to Myapp
         server: true,
         http: [port: 4000, transport_options: [socket_opts: [:inet6]]],
         url: [host: "mydomain.com", port: 80],
         check_origin: [
            "https://mydomain.com"'
            "https://www.mydomain.com"'
            "https://mydomain.com:4000"'
            "https://www.mydomain.com:4000"'               
         ],
         secret_key_base: "DHW*(DHQ(WY#H#&D(UW#EH&DH#UDH(#DN#WI"  # to generate key run "mix phx.gen.secret"
-------------------------------------------------
npm run deploy --prefix ./assets
mix phx.digest
MIX_ENV=prod mix compile   # compilar la app en produccion
MIX_ENV=prod mix ecto.create  # crear la db de produccion
MIX_ENV=prod mix ecto.migrate  # migrar tablas
MIX_ENV=prod mix release

_build/prod/rel/myapp/bin/myapp start

open your app in http://mydomain.com:4000

stop now with CTRL-C twice
----------------------------------------------------
nano /etc/nginx/sites-available/mydomain.com
  upstream phoenix (
     server 127.0.0.1:4000;     
  )
MODIFY location to -> location / {
                                allow all;
                                # Proxy Headers
                                proxy_http_version 1.1;
                                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                                proxy_set_header  X-Cluster-Client-Ip $remote_addr;
                                # Web Sockets
                                proxy_set_header Upgrade $http_upgrade;
                                proxy_set_header Connection "upgrade";
                                
                                proxy_pass http://phoenix;                                
                           }
-------------------------------------------------
sudo nginx -t
sudo systemctl restart nginx
you must see 502 BAD GATEWAY now in https://mydomain.com

_buil/prod/rel/myapp/bin/myapp start  # START WEB APP WITHOUT CONSOLE

_buil/prod/rel/myapp/bin/myapp daemon  # AS DAEMON WITHOUT CONSOLE

_buil/prod/rel/myapp/bin/myapp start_iex  # START WEB APP WITH CONSOLE

_buil/prod/rel/myapp/bin/myapp daemon_iex  # AS DAEMON WITH CONSOLE

now in https://mydomain.com you can see the web app