Add web process.

Procfile

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+web: ./bin/run-prod.sh

bin/run-common.sh

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+#!/bin/bash
+
+READ_ONLY=$(echo "${READ_ONLY:-false}" | tr '[:upper:]' '[:lower:]')
+
+if [[ "$READ_ONLY" == "false" ]]; then
+    python manage.py migrate --noinput
+fi

bin/run-prod.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+./bin/run-common.sh
+
+echo "$GIT_SHA" > static/revision.txt
+
+exec gunicorn kitsune.wsgi.app --config wsgi/config.py