Added environment variables to .env and docker-compose.yml

.env

@@ -2,8 +2,21 @@
 GITEA_UID=106
 GITEA_GID=113
 
+GITEA_NAME='MyGitRepo'
+
+GITEA__server__DOMAIN='gitea.example.com'
+GITEA__server__ROOT_URL='https://gitea.example.com'
+
+GITEA__mailer__ENABLED='true'
+GITEA__mailer__PROTOCOL='smtp'
+GITEA__mailer__SMTP_ADDR='mail.example.com'
+GITEA__mailer__SMTP_PORT='25'
+GITEA__mailer__FROM='noreply@example.com'
+GITEA__mailer__USER='user@example.com'
+GITEA__mailer__PASSWD='secret'
+
+
 # DB
-POSTGRES_PASSWORD='Dn32ps$EmcGsw'
+POSTGRES_PASSWORD='$$$changeMe$$$$'
 POSTGRES_DB=gitea
 POSTGRES_USER=gitea
-