diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..c91d481
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+packer/variables.json
diff --git a/config-scripts/install_mongodb.sh b/config-scripts/install_mongodb.sh
index c1fd318..77fee50 100755
--- a/config-scripts/install_mongodb.sh
+++ b/config-scripts/install_mongodb.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
-sudo apt-get update
-sudo apt-get install mongodb -y
-sudo systemctl start mongodb
-sudo systemctl enable mongodb
-sudo systemctl status mongodb
+wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add -
+echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu xenial/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list
+apt update
+apt install mongodb-org -y
+systemctl start mongod
+systemctl enable mongod
diff --git a/config-scripts/install_ruby.sh b/config-scripts/install_ruby.sh
index 09c63b8..ed8167b 100755
--- a/config-scripts/install_ruby.sh
+++ b/config-scripts/install_ruby.sh
@@ -1,5 +1,3 @@
 #!/bin/bash
-sudo apt update
-sudo apt install -y ruby-full ruby-bundler build-essential
-ruby -v
-bundler -v
+apt update
+apt install ruby-full ruby-bundler build-essential -y
diff --git a/packer/files/key.json b/packer/files/key.json
index a042848..e8e2f6f 100644
--- a/packer/files/key.json
+++ b/packer/files/key.json
@@ -5,4 +5,4 @@
    "key_algorithm": "RSA_2048",
    "public_key": "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtQ6f1kCIJbJFcDeYXRnQ\n61/1j7RbT3OsFUaetHP3WEZUx4Tr2RzjnnOjLUVkRIjjU/0Y8VWGLQx2b3bmBZ4P\nbngq+WtySVei+jLVk8o+gpK4AriuX5J15G/CfuOBgrCaXZok/YSi7h8ni7TU1YF6\nkjmUV/3JRZPG08xuiZh5pvATcpTlLUMopWCdhhGoci4B0QjX2pPl1d27u/thdu0O\nLe5RZX0k9jhC6v3T/FMPNpMPxUxnctejxpz+OWGuOdW0MPJPKL50C5WlB58M2EPI\nMahfmnRLkLZV4Yr4fR6Si+cvZIYQNKWeUURTYRxlqLCcnf+9We6hf9MuylJP24rd\n/QIDAQAB\n-----END PUBLIC KEY-----\n",
    "private_key": "PLEASE DO NOT REMOVE THIS LINE! Yandex.Cloud SA Key ID \u003cajegg8175h1q90thaise\u003e\n-----BEGIN PRIVATE KEY-----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\n5FeFGlxGhsg5Mmwd0eBaSPHu\n-----END PRIVATE KEY-----\n"
-}
\ No newline at end of file
+}
diff --git a/packer/ubuntu16.json b/packer/ubuntu16.json
index 9166ebd..ff5e9fb 100644
--- a/packer/ubuntu16.json
+++ b/packer/ubuntu16.json
@@ -3,8 +3,8 @@
         {
             "type": "yandex",
             "service_account_key_file": "files/key.json",
-            "folder_id": "b1getl3tuf5pfgn1so0j",
-            "source_image_family": "ubuntu-1604-lts",
+            "folder_id": "{{user `fid`}}",
+            "source_image_family": "{{user `sif`}}",
             "image_name": "reddit-base-{{timestamp}}",
             "image_family": "reddit-base",
             "ssh_username": "ubuntu",
diff --git a/packer/variables.json.example b/packer/variables.json.example
new file mode 100644
index 0000000..13a700e
--- /dev/null
+++ b/packer/variables.json.example
@@ -0,0 +1,5 @@
+{
+  "service_account_key_file": "key.json",
+  "fid": "b1getl3tuf5pfgn1sefg",
+  "sif": "ubuntu-1604-lts"
+}