Adding self installation command for fabrica

.packer/script/build

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+PACKER_TEMPLATE=$1
+shift
+
+if [ -f '.env' ]; then
+  set -a
+  source .env
+  set +a
+fi
+
+export PACKER_KEY_INTERVAL=10ms
+export PATH="$PATH:.bin"
+
+function usage {
+  cat<<EOF
+  Usage: $0 </chemin/vers/template/packer>
+  Construit l'image correspondante au template Packer donné
+EOF
+  exit 1
+}
+
+[ -z "${PACKER_TEMPLATE}" ] && usage
+
+# Validate template
+packer validate ${PACKER_TEMPLATE}
+[[ $? -ne 0 ]] && exit 123
+
+packer build $@ ${PACKER_TEMPLATE}