feat(ci): concourse pipeline

.concourse/pipeline.yml

@@ -0,0 +1,24 @@
+---
+resources:
+  - name: weekly
+    type: time
+    source:
+      interval: 168h
+  - name: ci-images.git
+    type: git
+    icon: github
+    source:
+      uri: https://code.icb4dc0.de/inetmock/ci-images.git
+
+jobs:
+  - name: go-ci
+    plan:
+      - in_parallel:
+        - get: weekly
+          trigger: true
+        - get: ci-images.git
+          trigger: true
+      - task: go-ci-image
+        file: ci-images.git/.concourse/tasks/go-ci.yml
+        input_mapping:
+          repo: ci-images.git

.concourse/tasks/go-ci.yml

@@ -0,0 +1,25 @@
+---
+platform: linux
+
+image_resource:
+  type: registry-image
+  source:
+    repository: gcr.io/kaniko-project/executor
+    tag: debug
+
+inputs:
+  - name: repo
+    path: .
+
+params:
+  GITEA_USER: ((gitea-credentials.user))
+  GITEA_TOKEN: ((gitea-credentials.token))
+
+run:
+  path: sh
+  args:
+    - -cex
+    - |
+      echo "{\"auths\": {\"https://code.icb4dc0.de\": {\"auth\" : \"$(printf '%s:%s' $GITEA_USER $GITEA_TOKEN | base64)\" }}}" > /kaniko/.docker/config.json
+
+      /kaniko/executor --destination code.icb4dc0.de/inetmock/ci-images/go-ci:latest --context go-ci/