Update dependencies matrix (#6)

* Ruby 2.7.3->2.7.4 in dockerfile

* GH Pages 226->228 in Dockerfile

* node version 16->18 in Dockerfile

* Update matrix to use pairs where appropriate

* update env variables to use the new matrix values

* spacing

.github/workflows/build.yml

@@ -14,14 +14,13 @@ jobs:
     name: "Build and Release"
     strategy:
       matrix:
-        RUBY_VERSION: [2.7.3]
-        NODE_MAJOR_VERSION: [16, 18]
-        GITHUB_PAGES_VERSION: [226]
+        VERSIONS: [ {ruby: 2.7.3, ghpages: 226}, {ruby: 2.7.4, ghpages: 228}]
+        NODE_MAJOR_VERSION: [16,18,20]
     runs-on: ubuntu-latest
     env:
-      RUBY_VERSION: ${{ matrix.RUBY_VERSION }}
+      RUBY_VERSION: ${{ matrix.VERSIONS.ruby }}
       NODE_MAJOR_VERSION: ${{ matrix.NODE_MAJOR_VERSION }}
-      GITHUB_PAGES_VERSION: ${{ matrix.GITHUB_PAGES_VERSION }}
+      GITHUB_PAGES_VERSION: ${{ matrix.VERSIONS.ghpages }}
 
     steps:
       - name: Lowercase repo for IMAGE_NAME

Dockerfile

@@ -1,16 +1,16 @@
 # Adapted from https://github.com/timbru31/docker-ruby-node/blob/master/2.7/16/Dockerfile
 # Using dependency references from https://pages.github.com/versions/
 
-# 2.7.3 is GitHub Pages 226 compatible
-ARG RUBY_VERSION=2.7.3
+# 2.7.4 is GitHub Pages 228 compatible
+ARG RUBY_VERSION=2.7.4
 
 FROM ruby:${RUBY_VERSION}
 
 # NOTE: These args need to stay below the FROM line in order for Docker to recognize them.
 ARG BUILD_DATE
 ARG VCS_REF
-ARG GH_PAGES_VERSION=226
-ARG NODE_MAJOR_VERSION=16
+ARG GH_PAGES_VERSION=228
+ARG NODE_MAJOR_VERSION=18
 
 RUN echo "RUBY_VERSION=${RUBY_VERSION}"
 RUN echo "BUILD_DATE=${BUILD_DATE}"