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-rw-r--r--Propellor/Property/Docker.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/Propellor/Property/Docker.hs b/Propellor/Property/Docker.hs
index dff1d137..d6c5b41b 100644
--- a/Propellor/Property/Docker.hs
+++ b/Propellor/Property/Docker.hs
@@ -234,7 +234,7 @@ runningContainer cid@(ContainerId hn cn) image containerprops = containerDesc ci
-- was already provisioned. So, it must be a reboot, and time to provision
-- again. If the flag file doesn't exist, don't provision here.
chain :: String -> IO ()
-chain s = case readish s of
+chain s = case toContainerId s of
Nothing -> error $ "Invalid ContainerId: " ++ s
Just cid -> do
changeWorkingDirectory localdir