refactor docker image building

Dockerfile

@@ -1,2 +0,0 @@
-FROM nginx:alpine
-COPY _site /usr/share/nginx/html

build/Dockerfile

@@ -0,0 +1,17 @@
+# borrowed from https://github.com/BretFisher/jekyll-serve
+
+FROM ruby:2.7-alpine
+
+RUN apk add --no-cache build-base gcc bash cmake git
+RUN apk add --no-cache imagemagick
+
+# install both bundler 1.x and 2.x
+RUN gem install bundler -v "~>1.0" && gem install bundler jekyll
+
+EXPOSE 4000
+
+WORKDIR /site
+
+ENTRYPOINT [ "jekyll" ]
+
+CMD [ "--help" ]

build/Dockerfile-serve

@@ -0,0 +1,8 @@
+FROM docker.rzen.dev/jekyll:latest
+
+COPY docker-entrypoint.sh /usr/local/bin/
+
+# on every container start, check if Gemfile exists and warn if it's missing
+ENTRYPOINT [ "docker-entrypoint.sh" ]
+
+CMD [ "bundle", "exec", "jekyll", "serve", "--force_polling", "-H", "0.0.0.0", "-P", "4000" ]

build/docker-entrypoint.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+set -e
+
+if [ ! -f Gemfile ]; then
+  echo "NOTE: hmm, I don't see a Gemfile so I don't think there's a jekyll site here"
+  echo "Either you didn't mount a volume, or you mounted it incorrectly."
+  echo "Be sure you're in your jekyll site root and use something like this to launch"
+  echo ""
+  echo "docker run -p 80:4000 -v \$(pwd):/site bretfisher/jekyll-serve"
+  echo ""
+  echo "NOTE: To create a new site, you can use the sister image bretfisher/jekyll like:"
+  echo ""
+  echo "docker run -v \$(pwd):/site bretfisher/jekyll new ."
+  exit 1
+fi
+
+bundle install --retry 5 --jobs 20
+
+exec "$@"

docker-compose.yaml

@@ -5,32 +5,32 @@ services:
 
   serve:
     container_name: isabelline-serve
-    image: jekyll/jekyll:4
-    command: jekyll serve --host 0.0.0.0 --future --draft --force_polling --livereload
+    image: docker.rzen.dev/jekyll-serve
+    # command: jekyll serve --host 0.0.0.0 --future --draft --force_polling --livereload
     environment:
       JEKYLL_ENV: local
     ports:
       - 4000:4000
       - 35729:35729
     volumes:
-      - .:/srv/jekyll
+      - .:/site
       - .bundle:/usr/local/bundle
 
   # build and push to rubygems.org
 
   gem-push:
     container_name: jekyll-gem-push
-    image: jekyll/jekyll:4.0
-    command: >
-      bash -c "gem build -v jekyll-theme-isabelline.gemspec \
-        && GEM_VER=`ruby -e '\
-          require \"rubygems\"; \
-          spec = Gem::Specification::load(\"jekyll-theme-isabelline.gemspec\"); \
-          puts \"#{spec.version}\"'` \
+    image: docker.rzen.dev/jekyll
+    command: |
+      bash -c "gem build -v jekyll-theme-isabelline.gemspec 
+        && GEM_VER=`ruby -e '
+          require \"rubygems\"; 
+          spec = Gem::Specification::load(\"jekyll-theme-isabelline.gemspec\"); 
+          puts \"#{spec.version}\"'` 
         && gem push jekyll-theme-isabelline-$${GEM_VER}.gem
       "
     volumes:
-      - .:/srv/jekyll
+      - .:/site
       - .bundle:/usr/local/bundle
       - ./.gem:/root/.gem
 
@@ -38,28 +38,28 @@ services:
 
   jekyll:
     container_name: jekyll
-    image: jekyll/jekyll:4.0
+    image: docker.rzen.dev/jekyll
     entrypoint: jekyll
     environment:      
       JEKYLL_ENV: local
     volumes:
       - .bundle:/usr/local/bundle
-      - .:/srv/jekyll
+      - .:/site
 
   gem:
     container_name: jekyll-gem
-    image: jekyll/jekyll:4.0
+    image: docker.rzen.dev/jekyll
     entrypoint: gem
     volumes:
       - .bundle:/usr/local/bundle
-      - .:/srv/jekyll
+      - .:/site
+      - ./.gem:/root/.gem
 
   bundle:
     container_name: bundle
-    image: jekyll/jekyll:4.0
+    image: jekyll/jekyll:4
     entrypoint: bundle
     volumes:
-      # - ./.bundle:/home/jekyll/.bundle
-      - ./.bundle:/usr/local/bundle
-      - .:/srv/jekyll
+      - .bundle:/usr/local/bundle
+      - .:/site
       - ./.gem:/root/.gem

jekyll-theme-isabelline.gemspec

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 Gem::Specification.new do |spec|
-  spec.version       = "0.1.20"
+  spec.version       = "0.1.21"
   
   spec.name          = "jekyll-theme-isabelline"
   spec.authors       = ["Rouslan Zenetl"]
@@ -13,7 +13,7 @@ Gem::Specification.new do |spec|
 
   # work out which files to include with the theme
   spec.files         = `git ls-files -z`.split("\x0").select do |f|
-    f.match(%r!^(assets|_(includes|layouts|sass)/|(LICENSE|README|CHANGELOG|index)((\.(txt|md|html)|$)))!i)
+    f.match(%r!^(assets|build|_(includes|layouts|sass)/|(LICENSE|README|CHANGELOG|index)((\.(txt|md|html)|$)))!i)
   end
 
   # TODO: jekyll ver should be same as image in docker-compose.yaml