fix(caddy): domain variable valid for a dashed slug, /Caddyfile anchored so routes named caddyfile stay tracked

template/caddy/.env.example.jinja

@@ -1,2 +1,2 @@
-{{ project_slug | upper }}_DOMAIN={{ project_slug | replace('_', '-') }}.localhost
+{{ project_slug | upper | replace('-', '_') }}_DOMAIN={{ project_slug | replace('_', '-') }}.localhost
 CLOUDFLARE_API_TOKEN=

template/caddy/.gitignore

@@ -1,2 +1,2 @@
 .env
-Caddyfile
+/Caddyfile

template/caddy/README.md.jinja

@@ -1,7 +1,7 @@
 {%- set dash = project_slug | replace('_', '-') -%}
 # caddy
 
-`site.caddy` routes `{{ '{$' }}{{ project_slug | upper }}_DOMAIN}` to the project's services over the external `caddy` docker network. It works standalone and inside a shared Caddy that fronts several projects.
+`site.caddy` routes `{{ '{$' }}{{ project_slug | upper | replace('-', '_') }}_DOMAIN}` to the project's services over the external `caddy` docker network. It works standalone and inside a shared Caddy that fronts several projects.
 
 Standalone:
 
@@ -12,7 +12,7 @@ cp .env.example .env
 docker compose up -d
 ```
 
-Shared Caddy: mount this directory as `/etc/caddy/projects.d/{{ dash }}:ro`, keep `import /etc/caddy/projects.d/*/site.caddy` in its Caddyfile and put `{{ project_slug | upper }}_DOMAIN` in its environment.
+Shared Caddy: mount this directory as `/etc/caddy/projects.d/{{ dash }}:ro`, keep `import /etc/caddy/projects.d/*/site.caddy` in its Caddyfile and put `{{ project_slug | upper | replace('-', '_') }}_DOMAIN` in its environment.
 
 Rules that keep `site.caddy` portable:
 

template/caddy/site.caddy.jinja

@@ -1,5 +1,5 @@
 {%- set dash = project_slug | replace('_', '-') -%}
-{%- set domain = project_slug | upper ~ '_DOMAIN' -%}
+{%- set domain = project_slug | upper | replace('-', '_') ~ '_DOMAIN' -%}
 {$ {{- domain -}} } {
 	encode zstd gzip
 {% if 'api' in routes and 'frontend' in routes %}