Update docker-compose.yml

Gemfile.lock

@@ -1,18 +1,18 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.9)
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     eventmachine (1.2.7)
-    ffi (1.14.2)
+    ffi (1.15.3)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
-    i18n (1.8.7)
+    i18n (1.8.10)
       concurrent-ruby (~> 1.0)
     jekyll (4.2.0)
       addressable (~> 2.4)
@@ -37,22 +37,22 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.4.1)
+    listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
-    rb-fsevent (0.10.4)
+    rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
+    rexml (3.2.3)
     rouge (3.26.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -62,7 +62,7 @@ GEM
     unicode-display_width (1.7.0)
 
 PLATFORMS
-  ruby
+  x86_64-linux-musl
 
 DEPENDENCIES
   jekyll (>= 4.2.0)
@@ -71,7 +71,7 @@ DEPENDENCIES
   tzinfo-data
 
 RUBY VERSION
-   ruby 2.6.5p114
+   ruby 2.7.1p83
 
 BUNDLED WITH
-   1.17.3
+   2.2.24

docker-compose.yml

@@ -1,8 +1,10 @@
-jekyll:
-    image: jekyll/jekyll:latest
-    command: jekyll serve --livereload --livereload-port 35729
-    ports:
-        - 4000:4000
-        - 35729:35729
-    volumes:
-        - .:/srv/jekyll
+version: "3"
+services: 
+    jekyll:
+        image: jekyll/builder:latest
+        command: jekyll serve --livereload --livereload-port 35729
+        ports:
+            - 4000:4000
+            - 35729:35729
+        volumes:
+            - .:/srv/jekyll