diff --git a/container/bin/build b/container/bin/build
index 7f4525e..1c01aaa 100755
--- a/container/bin/build
+++ b/container/bin/build
@@ -5,7 +5,7 @@ set -exuo pipefail
 exec 3>&1
 exec 1>&2
 
-pkg="$(build_source "$@")"
-
-build_indep "$pkg.dsc"
-build_archdep "$pkg.dsc"
+[ -d /output ] || sudo mkdir /output
+build_source "$@"
+build_indep /output
+build_archdep /output
diff --git a/container/bin/build_archdep b/container/bin/build_archdep
index 72c4bc8..a5d02c9 100755
--- a/container/bin/build_archdep
+++ b/container/bin/build_archdep
@@ -6,10 +6,11 @@ exec 3>&1
 exec 1>&2
 
 main() (
-	DEB_BUILD_OPTIONS="$(cat /input/.build_options)"
+	input_dir="${1:-/input}"
+	DEB_BUILD_OPTIONS="$(cat "$input_dir/.build_options")"
 	export DEB_BUILD_OPTIONS
 
-	dsc="$(realpath "/input/.source")"
+	dsc="$(realpath "$input_dir/.source")"
 	dpkg_arch="$(dpkg --print-architecture)"
 	dsc_arch="$(grep -oP '(?<=^Architecture: ).*' < "$dsc" | tr ' ' '\n')"
 
diff --git a/container/bin/build_indep b/container/bin/build_indep
index 0362135..a918ecb 100755
--- a/container/bin/build_indep
+++ b/container/bin/build_indep
@@ -6,10 +6,11 @@ exec 3>&1
 exec 1>&2
 
 main() (
-	DEB_BUILD_OPTIONS="$(cat /input/.build_options)"
+	input_dir="${1:-/input}"
+	DEB_BUILD_OPTIONS="$(cat "$input_dir/.build_options")"
 	export DEB_BUILD_OPTIONS
 
-	dsc="$(realpath "/input/.source")"
+	dsc="$(realpath "$input_dir/.source")"
 	dsc_arch="$(grep -oP '(?<=^Architecture: ).*' < "$dsc" | tr ' ' '\n')"
 
 	grep -P '^(linux-)?all$' <<< "$dsc_arch" || exit 0