Add docker install script

net/gce.sh

@@ -297,8 +297,8 @@ $(
     disable-background-upgrades.sh \
     create-solana-user.sh \
     install-earlyoom.sh \
-    install-rsync.sh \
     install-libssl-compatability.sh \
+    install-rsync.sh \
 )
 
 cat > /etc/motd <<EOM

net/scripts/install-docker.sh

@@ -0,0 +1,25 @@
+#!/bin/bash -ex
+
+[[ $(uname) = Linux ]] || exit 1
+[[ $USER = root ]] || exit 1
+
+apt-get update
+apt-get install -y \
+  apt-transport-https \
+  ca-certificates \
+  curl \
+  software-properties-common \
+
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
+
+add-apt-repository \
+  "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
+
+apt-get update
+apt-get install -y docker-ce
+docker run hello-world
+
+# Grant the solana user access to docker
+if id solana; then
+  addgroup solana docker
+fi