Merge pull request #1030 from ihatov08/fix_docker

Fix docker build error & add docker-compose.yml

Dockerfile

@@ -1,27 +1,27 @@
 FROM jruby:9.1-jdk
 
+RUN apt-get update -qq && apt-get install -y build-essential
 RUN echo 'gem: --no-rdoc --no-ri' >> /.gemrc
 
 ENV GEM_HOME /usr/local/bundle
 ENV PATH $GEM_HOME/bin:$PATH
-RUN gem install bundler \
+RUN gem install bundler -v '< 2' \
   && bundle config --global path "$GEM_HOME" \
   && bundle config --global bin "$GEM_HOME/bin"
 
 # don't create ".bundle" in all our apps
 ENV BUNDLE_APP_CONFIG $GEM_HOME
 
-RUN mkdir -p /usr/src/app
-WORKDIR /usr/src/app
+WORKDIR /app
 
 # these didn't work as ONBUILD, strangely. Idk why. -JBM
-ADD Gemfile /usr/src/app/
-ADD Gemfile.lock /usr/src/app/
-ADD Jarfile /usr/src/app/
-ADD Jarfile.lock /usr/src/app/
+COPY Gemfile ./
+COPY Gemfile.lock ./
+COPY Jarfile ./
+COPY Jarfile.lock ./
 RUN bundle install --system
 RUN jruby -S jbundle install
-ADD . /usr/src/app
+COPY . .
 
 EXPOSE 9292
-CMD ["jruby", "-G", "-r", "jbundler", "-S", "rackup", "-o", "0.0.0.0"]
+CMD ["jruby", "-G", "-r", "jbundler", "-S", "rackup", "-o", "0.0.0.0", "config.ru"]

docker-compose.yml

@@ -0,0 +1,14 @@
+version: '3.3'
+services:
+  web: &web
+    build:
+      context: .
+    command: "jruby -G -r jbundler -S rackup -p 9292 -o 0.0.0.0 config.ru"
+    volumes:
+      - .:/app
+      - bundle:/usr/local/bundle
+    ports:
+      - 9292:9292
+
+volumes:
+  bundle: