chore: update to ruby 4

gildesmarais · gildesmarais · commit ef384281d4f8 · 2025-12-26T11:54:08.000+01:00
diff --git a/.ruby-version b/.ruby-version
@@ -1 +1 @@
-3.4.0
+4.0.0
diff --git a/Dockerfile b/Dockerfile
@@ -1,5 +1,5 @@
 # Stage 1: Build
-FROM ruby:3.4.7-alpine3.21 AS builder
+FROM ruby:4.0.0-alpine3.21 AS builder
 
 LABEL maintainer="Gil Desmarais <html2rss-web-docker@desmarais.de>"
 
@@ -23,7 +23,7 @@ RUN apk add --no-cache \
   && bundle binstubs bundler html2rss
 
 # Stage 2: Runtime
-FROM ruby:3.4.7-alpine3.21
+FROM ruby:4.0.0-alpine3.21
 
 LABEL maintainer="Gil Desmarais <html2rss-web-docker@desmarais.de>"
 
