diff --git a/.woodpecker.yml b/.woodpecker.yml
index 9390f52..31718bc 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -2,23 +2,32 @@ pipeline:
   publish:
     image: plugins/docker
     registry: registry.nulo.in
-    repo: registry.nulo.in/sutty/monit
+    repo: registry.nulo.in/sutty/ruby
     tags:
-    - ${ALPINE_VERSION}
+    - ${ALPINE_VERSION}-${RUBY_VERSION}.${RUBY_PATCH}
     - latest
     build_args:
+    - RUBY_VERSION=${RUBY_VERSION}
     - ALPINE_VERSION=${ALPINE_VERSION}
-    - BASE_IMAGE=alpine
+    - BASE_IMAGE=registry.nulo.in/sutty/monit
     username: sutty
     secrets:
     - docker_password
-    cache_from: registry.nulo.in/sutty/monit:${ALPINE_VERSION}
+    cache_from: registry.nulo.in/sutty/ruby:${ALPINE_VERSION}
     when:
       branch: antifascista
       event: push
 matrix:
-  ALPINE_VERSION:
-  - 3.13.6
-  - 3.13.7
-  - 3.14.3
-  - 3.15.0
+  include:
+  - ALPINE_VERSION: 3.13.6
+    RUBY_VERSION: 2.7
+    RUBY_PATCH: 5
+  - ALPINE_VERSION: 3.13.7
+    RUBY_VERSION: 2.7.5
+    RUBY_PATCH: 5
+  - ALPINE_VERSION: 3.14.3
+    RUBY_VERSION: 2.7.5
+    RUBY_PATCH: 5
+  - ALPINE_VERSION: 3.15.0
+    RUBY_VERSION: 3.0
+    RUBY_PATCH: 3
diff --git a/Dockerfile b/Dockerfile
index dc02004..16c048c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,44 +1,25 @@
 ARG ALPINE_VERSION=3.13.6
+ARG RUBY_VERSION=2.7
+ARG RUBY_PATCH=5
 ARG BASE_IMAGE=alpine
 ARG EMAIL=monit@sutty.nl
 FROM ${BASE_IMAGE}:${ALPINE_VERSION} as build
 ENV EMAIL ${EMAIL:-monit@sutty.nl}
 
-RUN apk add --no-cache tzdata
+RUN apk add --no-cache ruby patch
+RUN test "${RUBY_VERSION}.${RUBY_PATCH}" = `ruby -e 'puts RUBY_VERSION'`
 
-COPY ./monitrc /etc/monitrc
-RUN chmod 600 /etc/monitrc
-RUN sed -re "s/@@EMAIL@@/${EMAIL}/" -i /etc/monitrc
+# Patch rubygems to install x86_64-linux-musl gems
+COPY ./rubygems-platform-musl.patch /tmp/
+RUN cd /usr/lib/ruby/${RUBY_VERSION}.0 && patch -Np 0 -i /tmp/rubygems-platform-musl.patch || true
 
 FROM ${BASE_IMAGE}:${ALPINE_VERSION}
 ARG ALPINE_VERSION
+ARG RUBY_VERSION
+ARG RUBY_PATCH
 MAINTAINER "f <f@sutty.nl>"
 
-# Locale
-ENV LANG="C.UTF-8"
-
-# Sutty's repository
-RUN echo ${ALPINE_VERSION} | cut -d . -f 1,2 | xargs -I {} echo https://alpine.sutty.nl/alpine/v{}/sutty | tee -a /etc/apk/repositories
-RUN wget https://alpine.sutty.nl/alpine/sutty.pub -O /etc/apk/keys/alpine@sutty.nl-5ea884cd.rsa.pub
-
-# Install monit and remove default config
-RUN apk add --no-cache tini monit knsupdate
-COPY --from=build /usr/share/zoneinfo/UTC /etc/localtime
-
-# Create directories
-RUN install -dm 2750 -o root -g root /etc/monit.d
-RUN install -dm 2750 -o root -g root /var/lib/monit
-
-# Install config
-COPY --from=build /etc/monitrc /etc/monitrc
-COPY ./nsupdate.sh /usr/local/bin/nsupdate
-COPY ./whatsmyip6.sh /usr/local/bin/whatsmyip6
-
-# Allow access to the web GUI
-EXPOSE 2812
-
-# Use tini as init
-ENTRYPOINT ["/sbin/tini", "--"]
-
-# Run monit, it will take care of running services afterwards
-CMD ["/usr/bin/monit"]
+# Install ruby and extracted gems and copy patched rubygems
+RUN apk add --no-cache tzdata ruby && rm /usr/lib/ruby/${RUBY_VERSION}.0/rubygems.rb
+RUN apk add --no-cache ruby-json ruby-bigdecimal ruby-rake ruby-bundler ruby-irb ruby-io-console ruby-etc
+COPY --from=build /usr/lib/ruby/${RUBY_VERSION}.0/rubygems.rb /usr/lib/ruby/${RUBY_VERSION}.0/
diff --git a/rubygems-platform-musl.patch b/rubygems-platform-musl.patch
new file mode 100644
index 0000000..d6db223
--- /dev/null
+++ b/rubygems-platform-musl.patch
@@ -0,0 +1,14 @@
+--- rubygems.rb.orig
++++ rubygems.rb
+@@ -764,10 +764,7 @@
+   def self.platforms
+     @platforms ||= []
+     if @platforms.empty?
+-      # XXX: Patched to avoid installing platform-specific gems with binaries
+-      # linked against glibc.
+-      @platforms = [Gem::Platform::RUBY]
+-      #@platforms = [Gem::Platform::RUBY, Gem::Platform.local]
++      @platforms = [Gem::Platform::RUBY, Gem::Platform.local]
+     end
+     @platforms
+   end