add CI folder and Dockerfile

Author: cookel2

Dockerfile.concourse

@@ -0,0 +1,8 @@
+# The value of ECR_REPOSITORY_URI will be substituted by the Concourse build
+FROM {{ECR_REPOSITORY_URI}}/onsdigital/dp-concourse-tools-ubuntu-22:ubuntu22.4-jammy-20250126
+
+WORKDIR /app/
+
+COPY dis-migration-service .
+
+CMD ["./dis-migration-service"]

ci/build.yml

@@ -0,0 +1,25 @@
+---
+platform: linux
+
+image_resource:
+  type: registry-image
+  source:
+    repository: golang
+    tag: 1.24.11-bookworm
+    registry_mirror:
+      host: ((ecr_repository_uri))
+    aws_access_key_id: ((aws_access_key_id))
+    aws_secret_access_key: ((aws_secret_access_key))
+    aws_region: ((aws_region))
+
+inputs:
+  - name: pull_request
+
+outputs:
+  - name: build
+
+run:
+  path: pull_request/ci/scripts/build.sh
+
+caches:
+  - path: /go

ci/concourse.yaml

@@ -0,0 +1,11 @@
+application:
+  repo_name: dis-migration-service
+helm:
+  repo_name: dis-helm-legacy-chart
+  values_files:
+    image_tag_key: dis-migration-service.image.tag
+    sandbox:
+      - values/dis-sandbox-internal.yaml
+aws:
+  ecr:
+    application: dis-migration-service

ci/scripts/build.sh

@@ -0,0 +1,7 @@
+#!/bin/bash -eux
+
+# Build the application
+pushd pull_request
+  make build-go
+  cp build/dis-migration-service Dockerfile.concourse ../build
+popd