refactor: remove N8N_VERSION env variable, hardcode stable

.env.example

@@ -187,10 +187,6 @@ RUN_N8N_IMPORT=
 # n8n configuration
 ############
 
-# n8n version (used for both n8n and task runner images)
-# Update this when upgrading n8n to ensure runner version matches
-N8N_VERSION=stable
-
 # Number of n8n worker-runner pairs to generate.
 # Each worker gets its own dedicated task runner sidecar.
 # After changing, run: bash scripts/generate_n8n_workers.sh

Makefile

@@ -58,25 +58,9 @@ doctor:
 switch-beta:
 	git restore docker-compose.yml
 	git checkout develop
-	@if [ -f .env ]; then \
-		if grep -q '^N8N_VERSION=' .env; then \
-			sed -i.bak 's/^N8N_VERSION=.*/N8N_VERSION=beta/' .env && rm -f .env.bak; \
-		else \
-			echo 'N8N_VERSION=beta' >> .env; \
-		fi; \
-	fi
-	@echo "N8N_VERSION set to beta"
 	sudo bash ./scripts/update.sh
 
 switch-stable:
 	git restore docker-compose.yml
 	git checkout main
-	@if [ -f .env ]; then \
-		if grep -q '^N8N_VERSION=' .env; then \
-			sed -i.bak 's/^N8N_VERSION=.*/N8N_VERSION=stable/' .env && rm -f .env.bak; \
-		else \
-			echo 'N8N_VERSION=stable' >> .env; \
-		fi; \
-	fi
-	@echo "N8N_VERSION set to stable"
 	sudo bash ./scripts/update.sh

docker-compose.yml

@@ -39,8 +39,6 @@ x-n8n: &service-n8n
     context: ./n8n
     dockerfile: Dockerfile.n8n
     pull: true
-    args:
-      N8N_VERSION: ${N8N_VERSION:-stable}
   environment: &service-n8n-env
     DB_POSTGRESDB_DATABASE: postgres
     DB_POSTGRESDB_HOST: postgres
@@ -116,8 +114,6 @@ x-n8n-worker-runner: &service-n8n-worker-runner
     context: ./n8n
     dockerfile: Dockerfile.runner
     pull: true
-    args:
-      N8N_VERSION: ${N8N_VERSION:-stable}
   environment:
     GENERIC_TIMEZONE: ${GENERIC_TIMEZONE:-America/New_York}
     N8N_RUNNERS_AUTH_TOKEN: ${N8N_RUNNERS_AUTH_TOKEN}

n8n/Dockerfile.n8n

@@ -1,5 +1,4 @@
-ARG N8N_VERSION=stable
-FROM n8nio/n8n:${N8N_VERSION}
+FROM n8nio/n8n:stable
 
 USER root
 RUN apk add --no-cache ffmpeg

n8n/Dockerfile.runner

@@ -1,5 +1,4 @@
-ARG N8N_VERSION=stable
-FROM n8nio/runners:${N8N_VERSION}
+FROM n8nio/runners:stable
 
 USER root
 

n8n/n8n-task-runners.json

@@ -18,7 +18,6 @@
                 "N8N_RUNNERS_TASK_TIMEOUT",
                 "N8N_RUNNERS_MAX_CONCURRENCY",
                 "N8N_SENTRY_DSN",
-                "N8N_VERSION",
                 "ENVIRONMENT",
                 "DEPLOYMENT_NAME",
                 "HOME"
@@ -44,7 +43,6 @@
                 "N8N_RUNNERS_TASK_TIMEOUT",
                 "N8N_RUNNERS_MAX_CONCURRENCY",
                 "N8N_SENTRY_DSN",
-                "N8N_VERSION",
                 "ENVIRONMENT",
                 "DEPLOYMENT_NAME"
             ],

scripts/update_preview.sh

@@ -79,8 +79,8 @@ check_image_update "caddy" "caddy:2-alpine"
 # Check n8n if profile is active
 if is_profile_active "n8n"; then
     log_subheader "n8n Services"
-    check_image_update "n8n" "docker.n8n.io/n8nio/n8n:${N8N_VERSION:-stable}"
-    check_image_update "n8n-runner" "n8nio/runners:${N8N_VERSION:-stable}"
+    check_image_update "n8n" "docker.n8n.io/n8nio/n8n:stable"
+    check_image_update "n8n-runner" "n8nio/runners:stable"
 fi
 
 # Check monitoring if profile is active