add failure handler

pipeline.yml

@@ -1,3 +1,19 @@
+---
+notify-failed: &notify-failed
+  task: notify-failed
+  config:
+    platform: linux
+    image_resource:
+      type: registry-image
+      source:
+        repository: badouralix/curl-jq
+    run:
+      path: sh
+      args:
+      - -exc
+      - |
+        curl -X POST -d '{"body":"Deployment failed!"}' -H "Content-Type: application/json" https://apprise.pim.kunis.nl:444/notify/concourse
+
 resources:
 - name: site-repo
   type: git
@@ -38,6 +54,8 @@ jobs:
           cd site-repo/jekyll
           bundle install
           bundle exec jekyll build --disable-disk-cache --destination ../../site-html
+    on_failure:
+      << : *notify-failed
   - task: build-image
     privileged: true
     config:
@@ -61,6 +79,8 @@ jobs:
             build
             ls image
             cat image/digest | cut -d ":" -f 2- > image/tag
+    on_failure:
+      << : *notify-failed
   - task: get-site-packages
     config:
       platform: linux
@@ -78,6 +98,8 @@ jobs:
           ls -lash
           curl -X 'GET' 'https://git.pim.kunis.nl/api/v1/packages/pim?type=container&q=static' -H 'accept: application/json' | jq -rc 'map(.version) | .[]' > site-packages/packages.txt
           cat site-packages/packages.txt
+    on_failure:
+      << : *notify-failed
   - task: delete-old-packages
     config:
       platform: linux
@@ -94,10 +116,14 @@ jobs:
         - |
           ls -lash
           while read pkg; do curl -X 'DELETE' "https://git.pim.kunis.nl/api/v1/packages/pim/container/static/$pkg?token=((api_key))" -H 'accept: application/json'; done < site-packages/packages.txt
+    on_failure:
+      << : *notify-failed
   - put: site-registry-image
     params:
       image: image/image.tar
       additional_tags: image/tag
+    on_failure:
+      << : *notify-failed
   - load_var: tag
     file: image/tag
   - task: deploy-site
@@ -137,3 +163,5 @@ jobs:
           - -exc
           - |
             curl -X POST -d '{"body":"Static website deployed!"}' -H "Content-Type: application/json" https://apprise.pim.kunis.nl:444/notify/concourse
+    on_failure:
+      << : *notify-failed