Make RTD preview redirections work.

Author: egeakman

.readthedocs.yaml

@@ -20,6 +20,6 @@ build:
   commands:
     - npm install -g pnpm@latest-10
     - make install
-    - make build PREVIEW=true
+    - make build PREVIEW=true SITE_URL=$READTHEDOCS_CANONICAL_URL
     - mkdir -p $READTHEDOCS_OUTPUT/html
     - cd dist && cp -r * $READTHEDOCS_OUTPUT/html

Makefile

@@ -6,7 +6,7 @@ VPS_HOST  ?= static.europython.eu
 VPS_PROD_PATH  ?= /home/static_content_user/content/europython_websites/ep2025
 VPS_PREVIEW_PATH  ?= /home/static_content_user/content/previews
 REMOTE_CMD=ssh $(VPS_USER)@$(VPS_HOST)
-SITE_URL ?= "https://$(SAFE_BRANCH).ep-preview.click"
+SITE_URL  ?= "https://ep2025.europython.eu"
 
 # Variables for build/deploy
 # ==========================
@@ -47,7 +47,7 @@ build:
 
 preview: RELEASES_DIR = $(VPS_PREVIEW_PATH)/$(SAFE_BRANCH)/releases
 preview: TARGET = $(RELEASES_DIR)/$(TIMESTAMP)
-preview:
+preview: SITE_URL = "https://$(SAFE_BRANCH).ep-preview.click"
 	@echo "Preview site URL: $(SITE_URL)"
 	echo $(TARGET)
 	@echo "\n\n**** Deploying preview of a branch '$(BRANCH)' (safe: $(SAFE_BRANCH)) to $(TARGET)...\n\n"