Use Concourse CI

concourse/build.yaml

@@ -0,0 +1,24 @@
+platform: linux
+
+image_resource:
+  type: registry-image
+  source:
+    repository: concourse/oci-build-task
+
+inputs:
+  - name: project-src
+    path: .
+
+outputs:
+  - name: image
+
+caches:
+  - path: cache
+
+params:
+  CONTEXT: .
+  # Reference: https://concourse-ci.org/building-an-image-and-using-it-in-a-task.html#build-the-image
+  UNPACK_ROOTFS: true
+
+run:
+  path: build

concourse/prepare-deployment-resources.yaml

@@ -0,0 +1,21 @@
+platform: linux
+
+image_resource:
+  type: registry-image
+  source:
+    repository: alpine
+
+inputs:
+  - name: project-src
+    path: .
+
+outputs:
+  - name: deploy-confs
+
+run:
+  path: sh
+  args:
+    - -exc
+    - |
+      VERSION=$( cat commit.sha )
+      sed "s/IMAGE_TAG/$VERSION/g" k8s/deployments.yaml >> deploy-confs/prod.yaml