Update deployment script

Author: osterman

Dockerfile

@@ -13,6 +13,7 @@ FROM alpine:3.8 as final
 # Install the cloudposse alpine repository
 ADD https://apk.cloudposse.com/[email protected] /etc/apk/keys/
 RUN echo "@cloudposse https://apk.cloudposse.com/3.8/vendor" >> /etc/apk/repositories
+RUN apk add --update variant@cloudposse
 
 # Expose port of the app
 EXPOSE 8080

deploy/ctl

@@ -1,37 +1,41 @@
 #!/usr/bin/env variant
 # vim:set ft=yaml
+
+parameters:
+- name: config
+  default: .color
+  description: "Config file that keeps track of the current color"
+
+options:
+- name: debug
+  default: boolean
+  default: false
+  description: "Enable debug mode"
+
 tasks:
+
   deps:
     description: "Install alpine dependencies"
     script: |
-      apk add --update curl make bash git kubectl@cloudposse helm@cloudposse helmfile@cloudposse
+      ! which apk >/dev/null || apk add --update curl make bash git kubectl@cloudposse helm@cloudposse helmfile@cloudposse
 
   color:
     description: "Lookup the current color"
-
-    parameters:
-    - name: config
-      default: ".color"
-      description: "Config file that keeps track of the current color"
-
     script: |
       config=${CF_VOLUME_PATH:-.}/{{ get "config" }}
       if [ -f ${config} ]; then
         cat ${config}
       else
         echo "blue" | tee ${config}
       fi
+
   blue-green:
     description: "Trigger a blue-green deployment"
 
     parameters:
     - name: namespace
       default: "default"
       description: "Kubernetes namespace"
-   
-    - name: config
-      default: ".color"
-      description: "Config file that keeps track of the current color"
 
     - name: color
       type: string
@@ -46,12 +50,15 @@ tasks:
       type: string
       default: blue
       description: "Flip green color to this color"
-  
-    script: |
-      config=${CF_VOLUME_PATH:-.}/{{ get "config" }}
-      cur_color={{ get "color" }}
-      new_color={{ get "color" | get }}
-      echo "Updating {{ get "namespace" }}: $cur_color => $new_color"
-      echo "$new_color" > ${config}
-      export COLOR=$new_color
-      helmfile --namespace {{ get "namespace" }} sync
+
+    steps:
+    - task: deps
+    - script: |
+        config=${CF_VOLUME_PATH:-.}/{{ get "config" }}
+        cur_color={{ get "color" }}
+        new_color={{ get "color" | get }}
+        echo "Config file is ${config}"
+        echo "Updating {{ get "namespace" }}: $cur_color => $new_color"
+        echo "$new_color" > ${config}
+        export COLOR=$new_color
+        helmfile --namespace {{ get "namespace" }} sync