woodpecker: use apko to master a custom base image for the workload

.woodpecker.yml

@@ -1,20 +1,32 @@
 pipeline:
-  deploy:
-    image: distroless.dev/alpine-base:latest
+  apko-image:
+    image: distroless.dev/apko:latest
     commands:
-      - |
+      - echo $REGISTRY_SECRET | apko login --username ariadne --password-stdin gitea.treehouse.systems
+      - apko publish --arch $(uname -m) apko.yaml gitea.treehouse.systems/ariadne/ariadne.space-hugo:latest
+    secrets: [REGISTRY_SECRET]
+
+  deploy:
+    image: gitea.treehouse.systems/ariadne/ariadne.space-hugo:latest
+    commands:
+      # build the new site
+      - hugo
+
+      # fetch the old newswire
+      - curl -s https://ariadne.space/newswire.txt > oldnewswire.txt
+
+      # set up the SSH deployment key and upload the site
+      - | 
           mkdir $HOME/.ssh
           echo "$SSH_KEY">$HOME/.ssh/id_ed25519
           echo "$SSH_KNOWN_HOSTS">$HOME/.ssh/known_hosts
           chown 600 $HOME/.ssh/id_ed25519
-      - echo '' >>/etc/apk/repositories
-      - echo 'https://dl-cdn.alpinelinux.org/alpine/edge/community' >> /etc/apk/repositories
-      - apk add hugo rsync openssh-client go git curl
-      - hugo
-      - wget -O oldnewswire.txt https://ariadne.space/newswire.txt
-      - rsync -avzHAX public/ kaniini@ariadne.space:public/
+          rsync -avHAX public/ kaniini@ariadne.space:public/
+
+      # if the newswire has changed, publish the new one.
       - |
           cmp oldnewswire.txt public/newswire.txt || \
               curl -s -H "Authorization: Bearer $MASTODON_SECRET" -F "status=$(cat public/newswire.txt)" \
               https://social.treehouse.systems/api/v1/statuses
+
     secrets: [SSH_KEY, SSH_KNOWN_HOSTS, MASTODON_SECRET]

apko.yaml

@@ -0,0 +1,12 @@
+contents:
+  repositories:
+    - https://dl-cdn.alpinelinux.org/alpine/edge/main
+    - https://dl-cdn.alpinelinux.org/alpine/edge/community
+  packages:
+    - alpine-base
+    - curl
+    - go
+    - git
+    - hugo
+    - openssh-client
+    - rsync