Add WKHTMLTOPDF for use in .env file if desired

Dockerfile

@@ -30,6 +30,15 @@ RUN \
 	php7-simplexml \
 	php7-tidy \
 	php7-tokenizer && \
+ echo "**** install wkhtmltopdf ****" && \
+ apk add --no-cache \
+	ttf-freefont \
+	fontconfig && \
+ apk add --no-cache \
+	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--allow-untrusted \
+	qt5-qtbase-dev \
+	wkhtmltopdf && \
  echo "**** configure php-fpm ****" && \
  sed -i 's/;clear_env = no/clear_env = no/g' /etc/php7/php-fpm.d/www.conf && \
  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php7/php-fpm.conf && \

Dockerfile.aarch64

@@ -30,6 +30,15 @@ RUN \
 	php7-simplexml \
 	php7-tidy \
 	php7-tokenizer && \
+ echo "**** install wkhtmltopdf ****" && \
+ apk add --no-cache \
+	ttf-freefont \
+	fontconfig && \
+ apk add --no-cache \
+	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--allow-untrusted \
+	qt5-qtbase-dev \
+	wkhtmltopdf && \
  echo "**** configure php-fpm ****" && \
  sed -i 's/;clear_env = no/clear_env = no/g' /etc/php7/php-fpm.d/www.conf && \
  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php7/php-fpm.conf && \

Dockerfile.armhf

@@ -30,6 +30,15 @@ RUN \
 	php7-simplexml \
 	php7-tidy \
 	php7-tokenizer && \
+ echo "**** install wkhtmltopdf ****" && \
+ apk add --no-cache \
+	ttf-freefont \
+	fontconfig && \
+ apk add --no-cache \
+	--repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+	--allow-untrusted \
+	qt5-qtbase-dev \
+	wkhtmltopdf && \
  echo "**** configure php-fpm ****" && \
  sed -i 's/;clear_env = no/clear_env = no/g' /etc/php7/php-fpm.d/www.conf && \
  echo "env[PATH] = /usr/local/bin:/usr/bin:/bin" >> /etc/php7/php-fpm.conf && \

README.md

@@ -144,18 +144,23 @@ In this instance `PUID=1000` and `PGID=1000`, to find yours use `id user` as bel
  
 ## Application Setup
 
-Default username is admin@admin.com with password of **password**, access the container at http://dockerhost:6875.
+The default username is admin@admin.com with the password of **password**, access the container at http://dockerhost:6875.
 
-This application is dependent on an MySQL database be it one you already have or a new one. If you do not already have one, set up our MariaDB container here https://hub.docker.com/r/linuxserver/mariadb/.
+This application is dependent on a MySQL database be it one you already have or a new one. If you do not already have one, set up our MariaDB container here https://hub.docker.com/r/linuxserver/mariadb/.
 
 If you intend to use this application behind a subfolder reverse proxy, such as our LetsEncrypt container or Traefik you will need to make sure that the `APP_URL` environment variable is set, or it will not work
 
 Documentation for BookStack can be found at https://www.bookstackapp.com/docs/
 
 ### Advanced Users (full control over the .env file)
-If you wish to use the extra functionality of BookStack such as email, memcache, ldap and so on you will need to make your own .env file with guidance from the BookStack documentation.
+If you wish to use the extra functionality of BookStack such as email, Memcache, LDAP and so on you will need to make your own .env file with guidance from the BookStack documentation.
 
-When you create the container, do not set any arguments for any SQL settings, or APP_URL. The container will copy an .env file to /config/www/.env on your host system for you to edit.
+When you create the container, do not set any arguments for any SQL settings, or APP_URL. The container will copy an exemplary .env file to /config/www/.env on your host system for you to edit.
+
+#### PDF Rendering
+[wkhtmltopdf](https://wkhtmltopdf.org/) is available to use as an alternative PDF rendering generator as described at https://www.bookstackapp.com/docs/admin/pdf-rendering/.
+
+The path to wkhtmltopdf in this image to include in your .env file is `/usr/bin/wkhtmltopdf`.