diff --git a/.env b/.env.sample
similarity index 89%
rename from .env
rename to .env.sample
index a161f0f..2dc34b3 100644
--- a/.env
+++ b/.env.sample
@@ -1,3 +1,5 @@
 REGISTRY_URL=docker.registry
 IMAGE_NAME=packer-builder
 VERSION=1.0.0
+PROXY=
+
diff --git a/.gitignore b/.gitignore
index 2f41577..d599a62 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 *.iso
 *.tar
 *.bz2
+.env
 
 packer/assets/id_rsa_qemu*
 packer/assets/packer_cache/
diff --git a/docker-compose.yml b/docker-compose.yml
index cc57c27..dce2eee 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,6 +5,8 @@ services:
       image: ${REGISTRY_URL}/${IMAGE_NAME}:${VERSION}
       build: 
          context: ./packer
+         args:
+           PROXY: "${PROXY}"
       entrypoint: "bash -c"
       command: "'while sleep 3600; do :; done'"
       stdin_open: true
diff --git a/packer/Dockerfile b/packer/Dockerfile
index 4e40b27..18b842c 100644
--- a/packer/Dockerfile
+++ b/packer/Dockerfile
@@ -1,5 +1,9 @@
 FROM hashicorp/packer:1.5.1
 
+ARG PROXY=""
+ENV http_proxy="${PROXY}"
+ENV https_proxy="${PROXY}"
+
 ARG USER=packer
 ARG GROUP=packer