Fix docker build recipe

misc/release/config-patch.txt

@@ -0,0 +1,3 @@
+.data.path = "/var/lib/fake-smtp/data.db"
+.smtp.address = "127.0.0.1:2525"
+.smtp.debug = false

misc/release/config-patch.yml

@@ -1,10 +0,0 @@
----
-- op: replace
-  path: /data/path
-  value: /var/lib/fake-smtp/data.db
-- op: replace
-  path: /smtp/address
-  value: 127.0.0.1:2525
-- op: replace
-  path: /smtp/debug
-  value: false