diff --git a/docker-compose/cadvisor/docker-compose.yaml b/docker-compose/cadvisor/docker-compose.yaml
index 8534fc3..10d726c 100755
--- a/docker-compose/cadvisor/docker-compose.yaml
+++ b/docker-compose/cadvisor/docker-compose.yaml
@@ -1,17 +1,17 @@
----
-services:
-  cadvisor:
-    image: gcr.io/cadvisor/cadvisor:v0.47.0     
-    container_name: cadvisor
-    ports:
-      - 8080:8080
-    volumes:
-      - /:/rootfs:ro
-      - /var/run:/var/run:ro
-      - /sys:/sys:ro
-      - /var/lib/docker/:/var/lib/docker:ro
-      - /dev/disk/:/dev/disk:ro
-    devices:
-      - /dev/kmsg
-    privileged: true
-    restart: unless-stopped
+---
+services:
+  cadvisor:
+    image: gcr.io/cadvisor/cadvisor:v0.47.0
+    container_name: cadvisor
+    ports:
+      - 8080:8080
+    volumes:
+      - /:/rootfs:ro
+      - /var/run:/var/run:ro
+      - /sys:/sys:ro
+      - /var/lib/docker/:/var/lib/docker:ro
+      - /dev/disk/:/dev/disk:ro
+    devices:
+      - /dev/kmsg
+    privileged: true
+    restart: unless-stopped
diff --git a/docker-compose/nodeexporter/docker-compose.yaml b/docker-compose/nodeexporter/docker-compose.yaml
index eaf5b5a..9ac3902 100755
--- a/docker-compose/nodeexporter/docker-compose.yaml
+++ b/docker-compose/nodeexporter/docker-compose.yaml
@@ -1,10 +1,10 @@
----
-services:
-  node_exporter:
-    image: quay.io/prometheus/node-exporter:v1.5.0
-    container_name: node_exporter
-    command: "--path.rootfs=/host"
-    pid: host
-    restart: unless-stopped
-    volumes:
+---
+services:
+  node_exporter:
+    image: quay.io/prometheus/node-exporter:v1.5.0
+    container_name: node_exporter
+    command: "--path.rootfs=/host"
+    pid: host
+    restart: unless-stopped
+    volumes:
       - /:/host:ro,rslave
diff --git a/docker-compose/prometheus/config/prometheus.yml b/docker-compose/prometheus/config/prometheus.yml
index 71a19b5..8f41942 100755
--- a/docker-compose/prometheus/config/prometheus.yml
+++ b/docker-compose/prometheus/config/prometheus.yml
@@ -1,27 +1,27 @@
-global:
-  scrape_interval:     15s # By default, scrape targets every 15 seconds.
-
-  # Attach these labels to any time series or alerts when communicating with
-  # external systems (federation, remote storage, Alertmanager).
-  # external_labels:
-  #  monitor: 'codelab-monitor'
-
-# A scrape configuration containing exactly one endpoint to scrape:
-# Here it's Prometheus itself.
-scrape_configs:
-  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
-  - job_name: 'prometheus'
-    # Override the global default and scrape targets from this job every 5 seconds.
-    scrape_interval: 5s
-    static_configs:
-      - targets: ['localhost:9090']
-
-  # Example job for node_exporter
-  # - job_name: 'node_exporter'
-  #   static_configs:
-  #     - targets: ['node_exporter:9100']
-
-  # Example job for cadvisor
-  # - job_name: 'cadvisor'
-  #   static_configs:
-  #     - targets: ['cadvisor:8080']
+global:
+  scrape_interval:     15s # By default, scrape targets every 15 seconds.
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  # external_labels:
+  #  monitor: 'codelab-monitor'
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+    static_configs:
+      - targets: ['localhost:9090']
+
+  # Example job for node_exporter
+  # - job_name: 'node_exporter'
+  #   static_configs:
+  #     - targets: ['node_exporter:9100']
+
+  # Example job for cadvisor
+  # - job_name: 'cadvisor'
+  #   static_configs:
+  #     - targets: ['cadvisor:8080']
diff --git a/vagrant/hyperv/ubuntu/docker/Vagrantfile b/vagrant/hyperv/ubuntu/docker/Vagrantfile
index 276b0ee..7530a3b 100755
--- a/vagrant/hyperv/ubuntu/docker/Vagrantfile
+++ b/vagrant/hyperv/ubuntu/docker/Vagrantfile
@@ -1,20 +1,20 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-Vagrant.configure("2") do |config|
-  config.vm.box = "generic/ubuntu2004"
-  config.vm.network "public_network"
-  config.vm.synced_folder ".", "/vagrant_data", disabled: true
-  config.vm.provider "hyperv"
-  config.vm.provider "hyperv" do |h|
-    h.enable_virtualization_extensions = false
-    h.linked_clone = true
-    h.memory = 2048
-    h.vmname = "ubuntu_docker_1"
-  end
-
-  config.vm.provision "ansible" do |a|
-    a.verbose = "v"
-    a.playbook = "playbook.yaml"
-  end
-end
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/ubuntu2004"
+  config.vm.network "public_network"
+  config.vm.synced_folder ".", "/vagrant_data", disabled: true
+  config.vm.provider "hyperv"
+  config.vm.provider "hyperv" do |h|
+    h.enable_virtualization_extensions = false
+    h.linked_clone = true
+    h.memory = 2048
+    h.vmname = "ubuntu_docker_1"
+  end
+
+  config.vm.provision "ansible" do |a|
+    a.verbose = "v"
+    a.playbook = "playbook.yaml"
+  end
+end
diff --git a/vagrant/hyperv/ubuntu/microk8s-installed/Vagrantfile b/vagrant/hyperv/ubuntu/microk8s-installed/Vagrantfile
index 166cabb..aa22bd5 100755
--- a/vagrant/hyperv/ubuntu/microk8s-installed/Vagrantfile
+++ b/vagrant/hyperv/ubuntu/microk8s-installed/Vagrantfile
@@ -1,20 +1,20 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-Vagrant.configure("2") do |config|
-  config.vm.box = "generic/ubuntu2004"
-  config.vm.network "public_network"
-  config.vm.synced_folder ".", "/vagrant_data", disabled: true
-  config.vm.provider "hyperv"
-  config.vm.provider "hyperv" do |h|
-    h.enable_virtualization_extensions = false
-    h.linked_clone = true
-    h.memory = 2048
-    h.vmname = "ubuntu_plain_1"
-  end
-
-  config.vm.provision "ansible" do |a|
-    a.verbose = "v"
-    a.playbook = "playbook.yaml"
-  end
-end
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/ubuntu2004"
+  config.vm.network "public_network"
+  config.vm.synced_folder ".", "/vagrant_data", disabled: true
+  config.vm.provider "hyperv"
+  config.vm.provider "hyperv" do |h|
+    h.enable_virtualization_extensions = false
+    h.linked_clone = true
+    h.memory = 2048
+    h.vmname = "ubuntu_plain_1"
+  end
+
+  config.vm.provision "ansible" do |a|
+    a.verbose = "v"
+    a.playbook = "playbook.yaml"
+  end
+end
diff --git a/vagrant/hyperv/ubuntu/plain-with-cockpit/Vagrantfile b/vagrant/hyperv/ubuntu/plain-with-cockpit/Vagrantfile
index 9a3e191..75e431e 100755
--- a/vagrant/hyperv/ubuntu/plain-with-cockpit/Vagrantfile
+++ b/vagrant/hyperv/ubuntu/plain-with-cockpit/Vagrantfile
@@ -1,22 +1,22 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-Vagrant.configure("2") do |config|
-  config.vm.box = "generic/ubuntu2004"
-  config.vm.network "public_network", bridge: "BRIDGE"
-  config.vm.synced_folder ".", "/vagrant_data", disabled: true
-  config.vm.provider "hyperv"
-  config.vm.hostname = "ubuntu_plan-with-cockpit-1"
-
-  config.vm.provider "hyperv" do |h|
-    h.enable_virtualization_extensions = false
-    h.linked_clone = true
-    h.memory = 2048
-    h.vmname = "ubuntu_plan-with-cockpit-1"
-  end
-
-  config.vm.provision "ansible" do |a|
-    a.verbose = "v"
-    a.playbook = "playbook.yaml"
-  end
-end
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/ubuntu2004"
+  config.vm.network "public_network", bridge: "BRIDGE"
+  config.vm.synced_folder ".", "/vagrant_data", disabled: true
+  config.vm.provider "hyperv"
+  config.vm.hostname = "ubuntu_plan-with-cockpit-1"
+
+  config.vm.provider "hyperv" do |h|
+    h.enable_virtualization_extensions = false
+    h.linked_clone = true
+    h.memory = 2048
+    h.vmname = "ubuntu_plan-with-cockpit-1"
+  end
+
+  config.vm.provision "ansible" do |a|
+    a.verbose = "v"
+    a.playbook = "playbook.yaml"
+  end
+end
diff --git a/vagrant/hyperv/ubuntu/plain/Vagrantfile b/vagrant/hyperv/ubuntu/plain/Vagrantfile
index c1c5863..3911f7b 100755
--- a/vagrant/hyperv/ubuntu/plain/Vagrantfile
+++ b/vagrant/hyperv/ubuntu/plain/Vagrantfile
@@ -1,15 +1,15 @@
-# -*- mode: ruby -*-
-# vi: set ft=ruby :
-
-Vagrant.configure("2") do |config|
-  config.vm.box = "generic/ubuntu2004"
-  config.vm.network "public_network"
-  config.vm.synced_folder ".", "/vagrant_data", disabled: true
-  config.vm.provider "hyperv"
-  config.vm.provider "hyperv" do |h|
-    h.enable_virtualization_extensions = false
-    h.linked_clone = true
-    h.memory = 2048
-    h.vmname = "ubuntu_plain_1"
-  end
-end
+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+Vagrant.configure("2") do |config|
+  config.vm.box = "generic/ubuntu2004"
+  config.vm.network "public_network"
+  config.vm.synced_folder ".", "/vagrant_data", disabled: true
+  config.vm.provider "hyperv"
+  config.vm.provider "hyperv" do |h|
+    h.enable_virtualization_extensions = false
+    h.linked_clone = true
+    h.memory = 2048
+    h.vmname = "ubuntu_plain_1"
+  end
+end