add docker env

.travis.yml

@@ -1,6 +1,6 @@
 language: ruby
 rvm:
-  - 2.6.3
+  - 2.7.0
 
 addons:
 apt:

README.md

@@ -6,7 +6,7 @@ All Downloads and Sources: [makeappdev.github.io/TUM-Projekte/](https://makeappd
 
 ## Setup & Build
 
-```
+```shell
 # Install
 make install
 
@@ -19,3 +19,9 @@ make test
 # Build and run locally
 make run
 ```
+
+or use our [Dockerfile](docker/) container
+
+```shell
+docker-compose up       # Now you can access the website at localhost:4000/TUM-Projekte/
+```

docker/Dockerfile

@@ -0,0 +1,24 @@
+FROM ruby:2.7
+
+ENV JEKYLL_VAR_DIR=/var/jekyll
+ENV JEKYLL_DATA_DIR=/srv/jekyll
+ENV JEKYLL_ENV=development
+
+RUN apt-get update
+
+RUN echo "gem: --no-ri --no-rdoc" >~/.gemrc
+RUN unset GEM_HOME && unset GEM_BIN && yes | gem update --system
+
+RUN unset GEM_HOME && unset GEM_BIN && yes | gem install --force bundler
+RUN gem install jekyll rspec html-proofer pygments.rb jekyll-pandoc
+
+RUN mkdir -p $JEKYLL_VAR_DIR $JEKYLL_DATA_DIR && rm -rf /root/.gem /home/jekyll/.gem $BUNDLE_HOME/cache $GEM_HOME/cache
+
+ENV LANG C.UTF-8
+
+WORKDIR /srv/jekyll
+VOLUME /srv/jekyll
+EXPOSE 35729
+EXPOSE 4000
+
+CMD [ "bundle", "install" ]

docker/docker-compose.yml

@@ -0,0 +1,11 @@
+version: '3'
+services:
+  tum_projects:
+    build: .
+    volumes:
+      - ..:/srv/jekyll
+    environment:
+      JEKYLL_ENV: production
+    ports:
+      - '4000:4000'
+    command: bash -c "bundle install && bundle exec jekyll serve --host 0.0.0.0"