feat(gitea): add Umami analytics via direct custom header template

Mount templates/custom/ directly to Gitea's default GITEA_CUSTOM templates
path. No entrypoint override or envsubst needed.

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

gitea/.env.example

@@ -1,5 +1,3 @@
 TRAEFIK_HOST=dev.example.com
 NETWORK_NAME=falcon_network
 RUNNER_TOKEN=change_me
-UMAMI_SCRIPT_URL=https://umami.example.com/script.js
-UMAMI_WEBSITE_ID=change_me

gitea/compose.yml

@@ -2,13 +2,6 @@ services:
   gitea:
     image: gitea/gitea:latest
     container_name: gitea
-    entrypoint:
-      - /bin/sh
-      - -c
-      - |
-        mkdir -p /data/gitea/templates/custom
-        envsubst '$UMAMI_SCRIPT_URL $UMAMI_WEBSITE_ID' < /etc/gitea-umami/custom/header.tmpl.tpl > /data/gitea/templates/custom/header.tmpl
-        exec /usr/bin/entrypoint
     environment:
       TZ: ${TIMEZONE:-Europe/Amsterdam}
       USER_UID: 1000
@@ -41,8 +34,6 @@ services:
       GITEA__ui__THEMES: gitea-auto,gitea-light,gitea-dark,arc-green,edge-auto,edge-dark,edge-light,everforest-auto,everforest-dark,everforest-light,gruvbox-auto,gruvbox-dark,gruvbox-light,gruvbox-material-auto,gruvbox-material-dark,gruvbox-material-light,nord,palenight,soft-era,sonokai,sonokai-andromeda,sonokai-atlantis,sonokai-espresso,sonokai-maia,sonokai-shusia
       GITEA__ui__DEFAULT_THEME: nord
       GITEA__ui__ENABLE_FEED: "true"
-      UMAMI_SCRIPT_URL: ${UMAMI_SCRIPT_URL}
-      UMAMI_WEBSITE_ID: ${UMAMI_WEBSITE_ID}
     ports:
       - "2222:2222"
     volumes:
@@ -50,7 +41,7 @@ services:
       - ../.data/gitea/config:/etc/gitea
       - ./css:/data/gitea/public/assets/css:ro
       - ./img:/data/gitea/public/assets/img:ro
-      - ./templates:/etc/gitea-umami:ro
+      - ./templates/custom:/data/gitea/templates/custom:ro
       - /etc/localtime:/etc/localtime:ro
     depends_on:
       db:

gitea/templates/custom/header.tmpl

@@ -0,0 +1 @@
+<script defer src="https://umami.pivoine.art/script.js" data-website-id="eee7e810-116b-408a-a46d-f51dcec217c2"></script>

gitea/templates/custom/header.tmpl.tpl

@@ -1 +0,0 @@
-<script defer src="${UMAMI_SCRIPT_URL}" data-website-id="${UMAMI_WEBSITE_ID}"></script>