diff --git a/check b/check
index 3a5f1e1..ac4e9de 100755
--- a/check
+++ b/check
@@ -1,7 +1,10 @@
 #!/usr/bin/env sh
 
 set -e
+set -o pipefail
 
+[ -e /opt/resource/common ] && cd /opt/resource/
 . ./common
 
 compute_version "$(fetch_file_infos get_files)"
+cleanup
diff --git a/common b/common
index b42b81a..4a1a510 100755
--- a/common
+++ b/common
@@ -45,6 +45,10 @@ write_config() {
     return 0
 }
 
+cleanup() {
+    rm -r /tmp/*
+}
+
 INPUT_PATH="$(save_input)"
 read_config "$INPUT_PATH"
 CONFIG_PATH="$(write_config)"
@@ -65,7 +69,7 @@ get_command() {
 }
 
 get_directory() {
-    jq -r '.params.directory // "/"' < "$INPUT_PATH"
+    jq -r '.params.directory // ""' < "$INPUT_PATH"
 }
 
 get_workdir() {
diff --git a/in b/in
index 6842d56..b1c5546 100755
--- a/in
+++ b/in
@@ -3,6 +3,7 @@
 set -e
 set -o pipefail
 
+[ -e /opt/resource/common ] && cd /opt/resource/
 . ./common
 
 cd "$1"
@@ -37,3 +38,5 @@ jq -r tostring << EOF
     "version": $(get_version)
 }
 EOF
+
+cleanup
diff --git a/out b/out
index b45c92b..16985c8 100755
--- a/out
+++ b/out
@@ -3,19 +3,24 @@
 set -e
 set -o pipefail
 
+[ -e /opt/resource/common ] && cd /opt/resource/
 . ./common
 
 cd "$1"
-files="$(find . | sed -e '/^\.$/d' -e 's|^./||')"
-tarfile="$(mktemp -tp /tmp)"
-remote_tarfile="$(mktemp -u)"
-tar -cf "$tarfile" ./*
-scp -F "$CONFIG_PATH" "$tarfile" "$HOSTNAME:$remote_tarfile"
+if [ -n "$(get_directory)" ]; then
+    files="$(find . | sed -e '/^\.$/d' -e 's|^./||')"
+    tarfile="$(mktemp -tp /tmp)"
+    remote_tarfile="$(mktemp -u)"
+    tar -cf "$tarfile" ./*
+    scp -F "$CONFIG_PATH" "$tarfile" "$HOSTNAME:$remote_tarfile"
+fi
 ssh -F "$CONFIG_PATH" "$HOSTNAME" sh -s << EOF
     set -e
-    cd "$(get_directory)"
-    tar xf "$remote_tarfile"
-    rm "$remote_tarfile"
+    if [ -n "$(get_directory)" ]; then
+        cd "$(get_directory)"
+        tar xf "$remote_tarfile"
+        rm "$remote_tarfile"
+    fi
     if [ "$(get_command)" = "null" ]; then
         exit 0
     fi
@@ -32,6 +37,11 @@ version="$(compute_version "$(fetch_file_infos get_files_for_new_version)")"
 
 jq -r tostring << EOF
 {
-    "version": $version
+    "version": {
+        "files": $version,
+        "command": true
+    }
 }
 EOF
+
+cleanup