use ruby 3.0

.ruby-version

@@ -1 +1 @@
-3.3.5
+3.0.7

Dockerfile

@@ -1,2 +1,2 @@
-FROM ruby:3.3-alpine
+FROM ruby:3.0-alpine
 RUN apk add build-base git

Gemfile.lock

@@ -1,17 +1,16 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (7.2.1)
+    activesupport (7.1.4)
       base64
       bigdecimal
-      concurrent-ruby (~> 1.0, >= 1.3.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
       connection_pool (>= 2.2.5)
       drb
       i18n (>= 1.6, < 2)
-      logger (>= 1.4.2)
       minitest (>= 5.1)
-      securerandom (>= 0.3)
-      tzinfo (~> 2.0, >= 2.0.5)
+      mutex_m
+      tzinfo (~> 2.0)
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
     base64 (0.2.0)
@@ -41,7 +40,7 @@ GEM
     faraday-net_http (3.3.0)
       net-http
     fastimage (2.3.1)
-    ffi (1.17.0-x86_64-linux-musl)
+    ffi (1.17.0)
     forwardable-extended (2.6.0)
     gemoji (4.1.0)
     github-pages (232)
@@ -232,6 +231,7 @@ GEM
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
     minitest (5.25.1)
+    mutex_m (0.2.0)
     net-http (0.4.1)
       uri
     nokogiri (1.16.7-x86_64-linux)
@@ -258,7 +258,6 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
-    securerandom (0.3.1)
     simpleidn (0.2.3)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
@@ -280,4 +279,4 @@ DEPENDENCIES
   webrick
 
 BUNDLED WITH
-   2.4.19
+   2.2.33