add tabula

tabula/Dockerfile

@@ -0,0 +1,27 @@
+#
+# Dockerfile for tabula
+#
+
+FROM jruby:9.2-jdk
+MAINTAINER EasyPi Software Foundation
+
+RUN apt-get update -qq && apt-get install -y build-essential curl \
+  && apt-get clean && rm -rf /var/lib/apt/lists/*
+RUN echo 'gem: --no-rdoc --no-ri' >> /.gemrc
+
+ENV GEM_HOME=/usr/local/bundle
+ENV PATH=$GEM_HOME/bin:$PATH
+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
+
+WORKDIR /app
+# these didn't work as ONBUILD, strangely. Idk why. -JBM
+RUN curl -sSL https://github.com/tabulapdf/tabula/archive/master.tar.gz | tar xz --strip 1
+RUN bundle install && jruby -S jbundle install
+
+EXPOSE 9292
+CMD ["jruby", "-G", "-r", "jbundler", "-S", "rackup", "-o", "0.0.0.0", "config.ru"]