Added .env.example files to all folders and changed the port env var for Gitea to follow naming convention

Gitea/.env.example

@@ -0,0 +1,23 @@
+# Specifiy the type of database server you are using so Gitea knows (leave default mysql for this docker compose setup)
+GITEA_database_DB_TYPE="mysql"
+
+# Port that the database server allows connection between the app server and the database server (leave default 3306)
+GITEA_database_HOST="3306"
+
+# Database name that the app server will create after connecting to the database server
+GITEA_database_NAME="gitea"
+
+# Username the app server will use to connect to the database server
+GITEA_database_USER="gitea"
+
+# Password for the database username that the app server will use to connect to the database server
+GITEA_database_PASSWD="changeme"
+
+# Main interface port for accessing the application
+GITEA_PORT="8000"
+
+# SSH port you can expose for some applciations to connect instead of HTTPS
+SSH_PORT="2222"
+
+# Password for the Root user on the database server.  You won't have to use this so just set it to something strong
+GITEA_database_ROOT_PASSWD="changeme"

Gitea/docker-compose.yaml

@@ -13,7 +13,7 @@ services:
       - /etc/timezone:/etc/timezone:ro
       - /etc/localtime:/etc/localtime:ro
     ports:
-      - ${HOST_PORT}:3000
+      - ${GITEA_PORT}:3000
       - ${SSH_PORT}:2222
     depends_on:
       - db