Adjust snapshot branch to build distribution Docker image (#88)

This adds a Dockerfile to the package-storage branch based on which a distribution of the package-registry with packages is built.

.ci/Jenkinsfile

@@ -10,6 +10,8 @@ pipeline {
     DOCKER_REGISTRY_SECRET = 'secret/observability-team/ci/docker-registry/prod'
     PIPELINE_LOG_LEVEL='INFO'
     GO_VERSION = '1.13.12'
+    DOCKER_IMG = "${env.DOCKER_REGISTRY}/package-registry/distribution"
+    DOCKER_IMG_PR = "${env.DOCKER_REGISTRY}/observability-ci/package-registry/distribution"
   }
   options {
     timeout(time: 1, unit: 'HOURS')

.dockerignore

@@ -0,0 +1,4 @@
+.DS_Store
+build
+testing
+vendor

Dockerfile

@@ -0,0 +1,15 @@
+# Here the version of the registry is specified this storage branch uses.
+# It should always be a specific version to make sure builds are reproducible.
+ARG PACKAGE_REGISTRY=57d417a84fa038cfb50a0cd661372c194199b3fd
+FROM docker.elastic.co/package-registry/package-registry:${PACKAGE_REGISTRY}
+
+LABEL package-registry=${PACKAGE_REGISTRY}
+
+# Adds specific config and packages
+COPY deployment/package-registry.yml /registry/config.yml
+COPY packages /packages
+
+# TODO: Find way to also copy in packages from staging and production
+
+# Sanity check on the packages. If packages are not valid, container does not even build.
+RUN ./package-registry -dry-run

deployment/package-registry.yml

@@ -0,0 +1,6 @@
+package_paths:
+  - /packages
+
+cache_time.search: 10s
+cache_time.categories: 10s
+cache_time.catch_all: 10s