Add a little packer template for building an Ubuntu host with Docker already present

.gitignore

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+.*.json
+*.sw*

Makefile

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+
+
+
+validate:
+	for t in $(shell find . -iname "*.packer.json" -type f); do \
+		./scripts/packer validate --var-file=.azure.json $$t; \
+	done;
+
+all: validate
+	for t in $(shell find . -iname "*.packer.json" -type f); do \
+		./scripts/packer build --var-file=.azure.json $$t; \
+	done;
+
+
+
+.PHONY: all validate clean

docker-ubuntu/docker-ubuntu.packer.json

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+{
+    "builders" : [
+        {
+            "type": "azure-arm",
+
+            "subscription_id": "{{user `azure_subscription_id`}}",
+            "client_id": "{{user `azure_client_id`}}",
+            "client_secret": "{{user `azure_client_secret`}}",
+            "tenant_id" : "{{user `azure_tenant_id`}}",
+
+            "resource_group_name": "azureagents-for-codevalet",
+            "storage_account": "codevaletvhds",
+
+            "capture_container_name": "images",
+            "capture_name_prefix": "packer",
+
+
+            "os_type": "Linux",
+            "image_publisher": "Canonical",
+            "image_offer": "UbuntuServer",
+            "image_sku": "16.04-LTS",
+
+            "location": "East US 2",
+            "vm_size": "Standard_A4"
+        }
+    ],
+    "provisioners" : [
+        {
+            "type" : "shell",
+            "inline" : [
+                "curl -sSL https://get.docker.com | bash",
+                "sudo apt-get install -qy git make default-jdk"
+            ]
+        },
+        {
+            "execute_command": "chmod +x {{ .Path }}; {{ .Vars }} sudo -E sh '{{ .Path }}'",
+            "inline": [
+                "/usr/sbin/waagent -force -deprovision+user && export HISTSIZE=0 && sync"
+            ],
+            "inline_shebang": "/bin/sh -x",
+            "type": "shell"
+        }
+    ]
+}