WIP: add container build stuff

.gitlab-ci.yml

@@ -28,3 +28,40 @@ lint:
     reports:
       junit: golangci-output.xml
     expire_in: 7 days
+
+build:
+  image: golang:1-alpine
+  stage: build
+  before_script:
+    - go version
+  script:
+    - >-
+      CGO_ENABLED=0
+      go build
+      -v
+      -o webhook
+      -ldflags '-w -s -extldflags "-static"'
+      .
+  artifacts:
+    paths:
+      - webhook
+
+build-image:
+  image: alpine:3
+  stage: deploy
+  needs:
+    - build
+  before_script:
+    - apk --no-cache add buildah ca-certificates-bundle
+    - >-
+      buildah login
+      --username "$CI_REGISTRY_USER"
+      --password "$CI_REGISTRY_PASSWORD"
+      "$CI_REGISTRY"
+  script:
+    - ctr=$(buildah from scratch)
+    - buildah copy $ctr /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+    - buildah copy $ctr webhook /webhook
+    - buildah config --entrypoint '["/webhook"]' $ctr
+    - buildah commit --squash $ctr $CI_REGISTRY_IMAGE:exp-$CI_COMMIT_SHA
+    - buildah push $CI_REGISTRY_IMAGE:exp-$CI_COMMIT_SHA