Ensure that all files are writeable

See: #123

docker-entrypoint.sh

@@ -38,6 +38,9 @@ done
 
 if [[ ! -f /db/init_done ]]; then
 	echo "No database directory. Initializing"
+	touch /db/changes.log
+	mkdir -p /db/diffs
+
 	if [[ "${USE_OAUTH_COOKIE_CLIENT}" = "yes" ]]; then
 		/app/venv/bin/python /app/bin/oauth_cookie_client.py -o /db/cookie.jar -s /secrets/oauth-settings.json --format netscape
 		# necessary to add newline at the end as oauth_cookie_client doesn't do that
@@ -46,7 +49,7 @@ if [[ ! -f /db/init_done ]]; then
 		echo "# Netscape HTTP Cookie File" >/db/cookie.jar
 		echo "${OVERPASS_COOKIE_JAR_CONTENTS}" >>/db/cookie.jar
 	fi
-	chown overpass /db/cookie.jar
+	chown -R overpass:overpass /db/cookie.jar /db/changes.log /db/diffs
 
 	if [[ "$OVERPASS_MODE" = "clone" ]]; then
 		(