chore: add .env.example files for all stacks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

blinko/.env.example

@@ -0,0 +1,3 @@
+NETWORK_NAME=falcon_network
+TRAEFIK_HOST=blinko.example.com
+BLINKO_NEXTAUTH_SECRET=change_me

coolify/.env.example

@@ -0,0 +1,7 @@
+TRAEFIK_HOST=coolify.example.com
+NETWORK_NAME=falcon_network
+APP_ID=change_me
+APP_KEY=change_me
+PUSHER_APP_ID=change_me
+PUSHER_APP_KEY=change_me
+PUSHER_APP_SECRET=change_me

gitea/.env.example

@@ -0,0 +1,3 @@
+TRAEFIK_HOST=dev.example.com
+NETWORK_NAME=falcon_network
+RUNNER_TOKEN=change_me

immich/.env.example

@@ -0,0 +1,2 @@
+TRAEFIK_HOST=immich.example.com
+NETWORK_NAME=falcon_network

mailpit/.env.example

@@ -0,0 +1,5 @@
+NETWORK_NAME=falcon_network
+SMTP_RELAY_HOST=smtp.example.com
+SMTP_RELAY_PORT=465
+SMTP_RELAY_USERNAME=user@example.com
+SMTP_RELAY_PASSWORD=change_me

mattermost/.env.example

@@ -0,0 +1,2 @@
+TRAEFIK_HOST=mattermost.example.com
+NETWORK_NAME=falcon_network

traefik/.env.example

@@ -0,0 +1,2 @@
+NETWORK_NAME=falcon_network
+ACME_EMAIL=user@example.com

umami/.env.example

@@ -0,0 +1,3 @@
+APP_SECRET=change_me
+TRAEFIK_HOST=umami.example.com
+NETWORK_NAME=falcon_network

vaultwarden/.env.example

@@ -0,0 +1,3 @@
+TRAEFIK_HOST=vault.example.com
+NETWORK_NAME=falcon_network
+SMTP_FROM=vaultwarden@example.com

watchtower/.env.example

@@ -0,0 +1 @@
+NOTIFICATION_URL=mattermost://mattermost.example.com/change_me