feat: add .env.example for all

src/gitea/.env.example

@@ -0,0 +1,16 @@
+# Gitea Version
+GITEA_VERSION=1.24.6-rootless
+
+# Database configuration
+GITEA_DB_TYPE=postgres
+GITEA_POSTGRES_HOST=db:5432
+
+# PostgreSQL settings
+POSTGRES_VERSION=17.6
+POSTGRES_USER=gitea
+POSTGRES_PASSWORD=gitea
+POSTGRES_DB=gitea
+
+# Gitea ports
+GITEA_HTTP_PORT=3000
+GITEA_SSH_PORT=3022