diff --git a/init_env.sh b/init_env.sh
new file mode 100755
index 0000000..a5388de
--- /dev/null
+++ b/init_env.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+#sudo apt-get remove docker docker-engine docker.io containerd runc
+
+#Check if Docker is installed
+if [ ! -f "/usr/bin/docker" ]; then
+#---------------
+echo "update apt..."
+sudo apt-get update
+echo "[installing docker...]"
+sudo apt-get install \
+	    ca-certificates \
+	        curl \
+		    gnupg
+
+echo "add docker GPG key..."
+sudo mkdir -m 0755 -p /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+
+echo \
+	  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
+	    "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
+	      sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+echo "install docker Engine..."
+sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+echo "[docker install finished!!!]"
+#-------------
+else
+	echo "[Docker is installed]"
+fi
+
+echo "[start install certbot]"
+sudo snap install core; sudo snap refresh core
+echo "[installing certbot...]"
+if [ ! -f "/snap/bin/certbot" ]; then
+	sudo snap install --classic certbot
+else
+	echo "certbot installed"
+	if [ ! -f "/usr/bin/certbot" ]; then
+		echo "linking certbot"
+		sudo ln -s /snap/bin/certbot /usr/bin/certbot
+	fi
+fi
+sudo certbot certonly --standalone