Adds Docker support (#10)

* Initial WIP for Docker generation

* Adds wkhtmltopdf

* Adds pdftk

* Force remove

* Run wkhtmltopdf inside xvfb

* No arguments to the entrypoint needed

* Adds xvfb to apt install

* Install pdftk from PPA and add skyward

* Adds support for single book generation using Docker

.dockerignore

@@ -0,0 +1,8 @@
+oathbringer
+oathbringer-reread
+skyward
+vendor
+wok
+wor
+books
+.git

Dockerfile

@@ -0,0 +1,35 @@
+# LTS Image
+FROM ubuntu:18.04
+
+LABEL maintainer="github.cosmere-ebooks@captnemo.in"
+
+ARG DEBIAN_FRONTEND="noninteractive"
+
+COPY Gemfile Gemfile.lock /src/
+
+WORKDIR /src
+
+RUN apt-get update && \
+    apt-get install -y software-properties-common && \
+    add-apt-repository -y ppa:malteworld/ppa && \
+    apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    calibre \
+    pandoc \
+    pdftk \
+    ruby \
+    ruby-dev \
+    wget \
+    wkhtmltopdf \
+    xvfb \
+    zlib1g-dev \
+    && gem install bundler --no-ri --no-rdoc \
+    && bundle install \
+    && apt-get remove -y --purge build-essential \
+    && apt-get clean
+
+COPY . /src
+
+ENTRYPOINT ["/src/bootstrap.sh"]
+
+VOLUME ["/output"]

README.md

@@ -58,8 +58,16 @@ You can read more at the announcement at [BrandonSanderson.com](https://brandons
 
 More details at https://www.tor.com/series/oathbringer-reread-brandon-sanderson/
 
+# Skyward
+
+> Skyward by #1 New York Times bestselling author Brandon Sanderson is the first book in an epic new series about a girl who dreams of becoming a pilot in a dangerous world at war for humanity’s future. We know you can't wait for the book to finally hit shelves on 11/6/18, so we're releasing new chapters here every week!
+
+See more details at [underlined](https://www.getunderlined.com/read/excerpt-reveal-start-reading-skyward-by-brandon-sanderson/) or [brandonsanderson.com](https://brandonsanderson.com/books/skyward/skyward/)
+
 ## Requirements
 
+Either [Docker](https://docs.docker.com/install/) installed or the following setup:
+
 - Ruby
 - Nokogiri gem installed (`gem install nokogiri`)
 - `pandoc` installed and available (for all 3 formats)
@@ -68,6 +76,8 @@ More details at https://www.tor.com/series/oathbringer-reread-brandon-sanderson/
 - (pdf) `wkhtmltopdf` for converting html to pdf
 - (pdf) `pdftk` to stitch the final PDF file
 
+### Notes
+
 - The final 2 tools can be skipped if you don't care about the PDF generation.
 - You can also skip calibre if you only want the EPUB file.
 - Edit the last line in `*.rb` to `:epub` / `:mobi`, `:pdf` to only trigger the specific builds
@@ -75,6 +85,25 @@ More details at https://www.tor.com/series/oathbringer-reread-brandon-sanderson/
 
 ## Generation
 
+If you have `docker` setup, run the following command inside an empty directory. This will download
+all the books from scratch and copy the final books into it.
+
+    docker run --rm --volume "$(pwd):/output" captn3m0/cosmere-books:latest [bookname]
+
+The last is an optional bookname, which can be one of the following:
+
+```
+edgedancer-reread
+oathbringer
+oathbringer-reread
+skyward
+wok-prime
+wok-reread
+wor-reread
+```
+
+If none is passed, all books will be generated.
+
 ## Oathbringer
 
 After downloading the repo and installing the requirements, just run
@@ -119,6 +148,12 @@ All the generated files will be saved with the filename `books/wok-prime.{epub|p
 
 All the generated files will be saved with the filename `books/oathbringer-reread.{epub|pdf|mobi|html}`. This generation might take a while the script attempts to strip out unnecessary HTML.
 
+## Skyward
+
+    ruby skyward.rb
+
+All the generated files will be saved with the filename `books/skyward.{epub|pdf|mobi|html}`. This generation might take a while the script attempts to strip out unnecessary HTML.
+
 ## Extra
 
 If you'd like to see any other books covered here, please create an issue, or reach out to me: <https://captnemo.in/contact/>

bootstrap.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Generate all the books
+mkdir -p books
+
+if [ -z "$1" ]
+  then
+    bundle exec ruby edgedancer-reread.rb
+    bundle exec ruby oathbringer.rb
+    bundle exec ruby oathbringer-reread.rb
+    bundle exec ruby wok-prime.rb
+    bundle exec ruby wok-reread.rb
+    bundle exec ruby wor-reread.rb
+    bundle exec ruby skyward.rb
+  else
+    bundle exec ruby "$1.rb"
+fi
+
+cp -r books /output/

methods.rb

@@ -64,6 +64,15 @@ def gen_mobi(name, format)
   end
 end
 
+
+def inside_docker?
+  File.readlines("/proc/1/sched").each do |line|
+    return line.strip != "systemd (1, #threads: 1)"
+  end
+rescue Errno::ENOENT => e
+  false
+end
+
 def gen_pdf(name, format)
   if commands?(%w[pandoc convert wkhtmltopdf pdftk]) && format_match(format, :pdf)
     # Generate PDF as well
@@ -72,7 +81,12 @@ def gen_pdf(name, format)
     puts '[pdf] Generated html for pdf'
 
     # Print the pdf_html file to pdf
-    `wkhtmltopdf books/#{name}_pdf.html books/#{name}-nocover.pdf`
+    if inside_docker?
+      `xvfb-run wkhtmltopdf books/#{name}_pdf.html books/#{name}-nocover.pdf`
+    else
+      `wkhtmltopdf books/#{name}_pdf.html books/#{name}-nocover.pdf`
+    end
+
     puts '[pdf] Generated PDF without cover'
 
     # Join the cover and pdf together