Add Docker installation helper

install-docker.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+set -e
+
+echo "======================================="
+echo " Installing Docker Engine"
+echo "======================================="
+
+apt-get update
+
+apt-get install -y \
+    ca-certificates \
+    curl \
+    gnupg \
+    lsb-release
+
+install -m 0755 -d /etc/apt/keyrings
+
+if [ ! -f /etc/apt/keyrings/docker.asc ]; then
+    curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
+        -o /etc/apt/keyrings/docker.asc
+fi
+
+chmod a+r /etc/apt/keyrings/docker.asc
+
+ARCH=$(dpkg --print-architecture)
+CODENAME=$( . /etc/os-release && echo "$VERSION_CODENAME")
+
+echo \
+"deb [arch=${ARCH} signed-by=/etc/apt/keyrings/docker.asc] \
+https://download.docker.com/linux/ubuntu ${CODENAME} stable" \
+> /etc/apt/sources.list.d/docker.list
+
+apt-get update
+
+apt-get install -y \
+    docker-ce \
+    docker-ce-cli \
+    containerd.io \
+    docker-buildx-plugin \
+    docker-compose-plugin
+
+systemctl enable docker || true
+systemctl start docker || true
+
+echo
+echo "Docker Version:"
+docker --version
+
+echo
+echo "Docker Compose Version:"
+docker compose version
+
+echo
+echo "Testing Docker..."
+docker run hello-world || true
+
+echo
+echo "======================================="
+echo " Docker installation complete!"
+echo "======================================="