Heroku

.magick/README.md

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+Since Heroku has a read-only filesystem, we need to use this directory to override policy.xml on Heroku.
+Then, set MAGICK_CONFIGURE_PATH to load this file with higher precedence.
+
+See also:
+https://stackoverflow.com/questions/39425446/imagemagick-change-policy-xml-on-heroku
+
+colors.xml and type.xml are directly copied, unedited.
+policy.xml is copied with read|write applied on path.

.magick/colors.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE colormap [
+<!ELEMENT colormap (color)+>
+<!ELEMENT color (#PCDATA)>
+<!ATTLIST color name CDATA "0">
+<!ATTLIST color color CDATA "rgb(0,0,0)">
+<!ATTLIST color compliance CDATA "SVG">
+]>

.magick/policy.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE policymap [
+<!ELEMENT policymap (policy)+>
+<!ELEMENT policy (#PCDATA)>
+<!ATTLIST policy domain (delegate|coder|filter|path|resource) #IMPLIED>
+<!ATTLIST policy name CDATA #IMPLIED>
+<!ATTLIST policy rights CDATA #IMPLIED>
+<!ATTLIST policy pattern CDATA #IMPLIED>
+<!ATTLIST policy value CDATA #IMPLIED>
+]>
+<!--
+  Configure ImageMagick policies.
+
+  Domains include system, delegate, coder, filter, path, or resource.
+
+  Rights include none, read, write, and execute.  Use | to combine them,
+  for example: "read | write" to permit read from, or write to, a path.
+
+  Use a glob expression as a pattern.
+
+  Suppose we do not want users to process MPEG video images:
+
+    <policy domain="delegate" rights="none" pattern="mpeg:decode" />
+
+  Here we do not want users reading images from HTTP:
+
+    <policy domain="coder" rights="none" pattern="HTTP" />
+
+  Lets prevent users from executing any image filters:
+
+    <policy domain="filter" rights="none" pattern="*" />
+
+  The /repository file system is restricted to read only.  We use a glob
+  expression to match all paths that start with /repository:
+
+    <policy domain="path" rights="read" pattern="/repository/*" />
+
+  Let's prevent possible exploits by removing the right to use indirect reads.
+
+<!--THIS IS THE ONLY EDITED LINE: <policy domain="path" rights="none" pattern="@*"[ ]*/>-->
+
+  Any large image is cached to disk rather than memory:
+
+    <policy domain="resource" name="area" value="1GB"/>
+
+  Define arguments for the memory, map, area, width, height, and disk resources
+  with SI prefixes (.e.g 100MB).  In addition, resource policies are maximums
+  for each instance of ImageMagick (e.g. policy memory limit 1GB, -limit 2GB
+  exceeds policy maximum so memory limit is 1GB).
+-->
+<policymap>
+  <!-- <policy domain="resource" name="temporary-path" value="/tmp"/> -->
+  <policy domain="resource" name="memory" value="256MiB"/>
+  <policy domain="resource" name="map" value="512MiB"/>
+  <policy domain="resource" name="width" value="16KP"/>
+  <policy domain="resource" name="height" value="16KP"/>
+  <policy domain="resource" name="area" value="128MB"/>
+  <policy domain="resource" name="disk" value="1GiB"/>
+  <!-- <policy domain="resource" name="file" value="768"/> -->
+  <!-- <policy domain="resource" name="thread" value="4"/> -->
+  <!-- <policy domain="resource" name="throttle" value="0"/> -->
+  <!-- <policy domain="resource" name="time" value="3600"/> -->
+  <!-- <policy domain="system" name="precision" value="6"/> -->
+  <!-- not needed due to the need to use explicitly by mvg: -->
+  <!-- <policy domain="delegate" rights="none" pattern="MVG" /> -->
+  <!-- use curl -->
+  <policy domain="delegate" rights="none" pattern="URL" />
+  <policy domain="delegate" rights="none" pattern="HTTPS" />
+  <policy domain="delegate" rights="none" pattern="HTTP" />
+  <!-- in order to avoid to get image with password text -->
+  <!--<policy domain="path" rights="none" pattern="@*"/>-->
+  <policy domain="cache" name="shared-secret" value="passphrase" stealth="true"/>
+  <!-- disable ghostscript format types -->
+  <policy domain="coder" rights="none" pattern="PS" />
+  <policy domain="coder" rights="none" pattern="PS2" />
+  <policy domain="coder" rights="none" pattern="PS3" />
+  <policy domain="coder" rights="none" pattern="EPS" />
+  <policy domain="coder" rights="none" pattern="PDF" />
+  <policy domain="coder" rights="none" pattern="XPS" />
+</policymap>

.magick/type-ghostscript.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE typemap [
+<!ELEMENT typemap (type)+>
+<!ELEMENT type (#PCDATA)>
+<!ELEMENT include (#PCDATA)>
+<!ATTLIST type name CDATA #REQUIRED>
+<!ATTLIST type fullname CDATA #IMPLIED>
+<!ATTLIST type family CDATA #IMPLIED>
+<!ATTLIST type foundry CDATA #IMPLIED>
+<!ATTLIST type weight CDATA #IMPLIED>
+<!ATTLIST type style CDATA #IMPLIED>
+<!ATTLIST type stretch CDATA #IMPLIED>
+<!ATTLIST type format CDATA #IMPLIED>
+<!ATTLIST type metrics CDATA #IMPLIED>
+<!ATTLIST type glyphs CDATA #REQUIRED>
+<!ATTLIST type version CDATA #IMPLIED>
+<!ATTLIST include file CDATA #REQUIRED>
+]>
+<typemap>
+  <type name="AvantGarde-Book" fullname="AvantGarde Book" family="AvantGarde" foundry="URW" weight="400" style="normal" stretch="normal" format="type1" metrics="/usr/share/fonts/type1/gsfonts/a010013l.afm" glyphs="/usr/share/fonts/type1/gsfonts/a010013l.pfb"/>
+</typemap>

.magick/type.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE typemap [
+<!ELEMENT typemap (type)+>
+<!ELEMENT type (#PCDATA)>
+<!ELEMENT include (#PCDATA)>
+<!ATTLIST type name CDATA #REQUIRED>
+<!ATTLIST type fullname CDATA #IMPLIED>
+<!ATTLIST type family CDATA #IMPLIED>
+<!ATTLIST type foundry CDATA #IMPLIED>
+<!ATTLIST type weight CDATA #IMPLIED>
+<!ATTLIST type style CDATA #IMPLIED>
+<!ATTLIST type stretch CDATA #IMPLIED>
+<!ATTLIST type format CDATA #IMPLIED>
+<!ATTLIST type metrics CDATA #IMPLIED>
+<!ATTLIST type glyphs CDATA #REQUIRED>
+<!ATTLIST type version CDATA #IMPLIED>
+<!ATTLIST include file CDATA #REQUIRED>
+]>
+<typemap>
+   <include file="type-ghostscript.xml" />
+</typemap>

.slugignore

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+assets/
+docs/

Procfile

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+release: python3 manage.py migrate
+web: gunicorn rcvis.wsgi
+movie: supervisord -c /etc/supervisor/supervisord.conf