diff --git a/config-joey.hs b/config-joey.hs
index 318d5d9..fafc409 100644
--- a/config-joey.hs
+++ b/config-joey.hs
@@ -189,48 +189,12 @@ hosts =               --                  (o)  `
 			(Just "remotes/origin/old-kitenet.net")
 	
 	-- git-annex autobuilder containers
-	, standardGitAnnexBuilder "amd64" 15 "2h"
-	, standardGitAnnexBuilder "i386" 45 "2h"
-	-- armel builder has a companion container using amd64 that
-	-- runs the build first to get TH splices. They need
-	-- to have the same versions of all haskell libraries installed.
-	, Docker.container "armel-git-annex-builder-companion"
-		(image $ System (Debian Unstable) "amd64")
-		& Apt.stdSourcesList Unstable
-		& Apt.unattendedUpgrades
-		-- This volume is shared with the armel builder.
-		& Docker.volume GitAnnexBuilder.gitbuilderdir
-		-- Install current versions of build deps from cabal.
-		& GitAnnexBuilder.tree "armel"
-		& GitAnnexBuilder.buildDepsNoHaskellLibs
-		& GitAnnexBuilder.cabalDeps
-		-- The armel builder can ssh to this companion,
-		-- using $COMPANION_PORT_22_TCP_ADDR as the hostname,
-		& Docker.expose "22"
-		& Apt.serviceInstalledRunning "ssh"
-		& Ssh.authorizedKeys GitAnnexBuilder.builduser
-	, Docker.container "armel-git-annex-builder"
-		(image $ System (Debian Unstable) "armel")
-		& Apt.stdSourcesList Unstable
-		& Apt.unattendedUpgrades
-		& Apt.installed ["openssh-client"]
-		& Docker.link "armel-git-annex-builder-companion" "companion"
-		& Docker.volumes_from "armel-git-annex-builder-companion"
-		-- TODO: automate installing haskell libs
-		-- (Currently have to run
-		-- git-annex/standalone/linux/install-haskell-packages
-		-- which is not fully automated.)
-		& GitAnnexBuilder.builder' GitAnnexBuilder.buildDepsNoHaskellLibs "armel" "1 3 * * *" "5h" True
-		& Ssh.keyImported SshRsa GitAnnexBuilder.builduser
+	, GitAnnexBuilder.standardContainer dockerImage "amd64" 15 "2h"
+	, GitAnnexBuilder.standardContainer dockerImage "i386" 45 "2h"
+	, GitAnnexBuilder.armelCompanionContainer dockerImage
+	, GitAnnexBuilder.armelContainer dockerImage "1 3 * * *" "5h"
 	] ++ monsters
 
-standardGitAnnexBuilder :: Architecture -> Int -> GitAnnexBuilder.TimeOut -> Host
-standardGitAnnexBuilder arch buildminute timeout = Docker.container (arch ++ "-git-annex-builder")
-	(image $ System (Debian Unstable) arch)
-	& Apt.stdSourcesList Unstable
-	& Apt.unattendedUpgrades
-	& GitAnnexBuilder.builder arch (show buildminute ++ " * * * *") timeout True
-
 -- This is my standard system setup.
 standardSystem :: HostName -> DebianSuite -> Architecture -> Host
 standardSystem hn suite arch = host hn
@@ -257,7 +221,7 @@ standardSystem hn suite arch = host hn
 
 -- This is my standard container setup, featuring automatic upgrades.
 standardContainer :: Docker.ContainerName -> DebianSuite -> Architecture -> Host
-standardContainer name suite arch = Docker.container name (image system)
+standardContainer name suite arch = Docker.container name (dockerImage system)
 	& os (System (Debian suite) arch)
 	& Apt.stdSourcesList suite
 	& Apt.unattendedUpgrades
@@ -265,10 +229,10 @@ standardContainer name suite arch = Docker.container name (image system)
 	system = System (Debian suite) arch
 
 -- Docker images I prefer to use.
-image :: System -> Docker.Image
-image (System (Debian Unstable) arch) = "joeyh/debian-unstable-" ++ arch
-image (System (Debian Stable) arch) = "joeyh/debian-stable-" ++ arch
-image _ = "debian-stable-official" -- does not currently exist!
+dockerImage :: System -> Docker.Image
+dockerImage (System (Debian Unstable) arch) = "joeyh/debian-unstable-" ++ arch
+dockerImage (System (Debian Stable) arch) = "joeyh/debian-stable-" ++ arch
+dockerImage _ = "debian-stable-official" -- does not currently exist!
 
 -- Digital Ocean does not provide any way to boot
 -- the kernel provided by the distribution, except using kexec.
diff --git a/src/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs b/src/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
index acf122a..80877fa 100644
--- a/src/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
+++ b/src/Propellor/Property/SiteSpecific/GitAnnexBuilder.hs
@@ -4,7 +4,9 @@ import Propellor
 import qualified Propellor.Property.Apt as Apt
 import qualified Propellor.Property.User as User
 import qualified Propellor.Property.Cron as Cron
+import qualified Propellor.Property.Ssh as Ssh
 import qualified Propellor.Property.File as File
+import qualified Propellor.Property.Docker as Docker
 import Propellor.Property.Cron (CronTimes)
 
 builduser :: UserName
@@ -93,3 +95,45 @@ cabalDeps = flagFile go cabalupdated
 	where
 		go = userScriptProperty builduser ["cabal update && cabal install git-annex --only-dependencies || true"]
 		cabalupdated = homedir </> ".cabal" </> "packages" </> "hackage.haskell.org" </> "00-index.cache"
+
+standardContainer :: (System -> Docker.Image) -> Architecture -> Int -> TimeOut -> Host
+standardContainer dockerImage arch buildminute timeout = Docker.container (arch ++ "-git-annex-builder")
+	(dockerImage $ System (Debian Unstable) arch)
+	& Apt.stdSourcesList Unstable
+	& Apt.unattendedUpgrades
+	& builder arch (show buildminute ++ " * * * *") timeout True
+
+-- armel builder has a companion container using amd64 that
+-- runs the build first to get TH splices. They need
+-- to have the same versions of all haskell libraries installed.
+armelCompanionContainer :: (System -> Docker.Image) -> Host
+armelCompanionContainer dockerImage = Docker.container "armel-git-annex-builder-companion"
+	(dockerImage $ System (Debian Unstable) "amd64")
+	& Apt.stdSourcesList Unstable
+	& Apt.unattendedUpgrades
+	-- This volume is shared with the armel builder.
+	& Docker.volume gitbuilderdir
+	-- Install current versions of build deps from cabal.
+	& tree "armel"
+	& buildDepsNoHaskellLibs
+	& cabalDeps
+	-- The armel builder can ssh to this companion,
+	-- using $COMPANION_PORT_22_TCP_ADDR as the hostname,
+	& Docker.expose "22"
+	& Apt.serviceInstalledRunning "ssh"
+	& Ssh.authorizedKeys builduser
+
+armelContainer :: (System -> Docker.Image) -> Cron.CronTimes -> TimeOut -> Host
+armelContainer dockerImage crontimes timeout = Docker.container "armel-git-annex-builder"
+	(dockerImage $ System (Debian Unstable) "armel")
+	& Apt.stdSourcesList Unstable
+	& Apt.unattendedUpgrades
+	& Apt.installed ["openssh-client"]
+	& Docker.link "armel-git-annex-builder-companion" "companion"
+	& Docker.volumes_from "armel-git-annex-builder-companion"
+	-- TODO: automate installing haskell libs
+	-- (Currently have to run
+	-- git-annex/standalone/linux/install-haskell-packages
+	-- which is not fully automated.)
+	& builder' buildDepsNoHaskellLibs "armel" crontimes timeout True
+	& Ssh.keyImported SshRsa builduser