Migrate build, deploy & release system to BuildKite.

Also remove support for Cloudflare file-based authentication, relying solely on environment variables for authentication info to the Docker entry-point.

.buildkite/build.pipeline.yml

@@ -0,0 +1,6 @@
+steps:
+
+  - label: Build Docker image
+    command:
+      - gcloud docker -- build --tag gcr.io/infolinks-gcr/k8s-cloudflared:${BUILDKITE_COMMIT} .
+      - gcloud docker -- push gcr.io/infolinks-gcr/k8s-cloudflared:${BUILDKITE_COMMIT}

.buildkite/release.pipeline.yml

@@ -0,0 +1,9 @@
+steps:
+
+  - label: Build versioned Docker image
+    command:
+      - gcloud docker -- pull gcr.io/infolinks-gcr/k8s-cloudflared:${BUILDKITE_COMMIT}
+      - gcloud docker -- tag gcr.io/infolinks-gcr/k8s-cloudflared:${BUILDKITE_COMMIT} infolinks/k8s-cloudflared:${VERSION}
+      - gcloud docker -- push infolinks/k8s-cloudflared:${VERSION}
+      - gcloud docker -- tag gcr.io/infolinks-gcr/k8s-cloudflared:${BUILDKITE_COMMIT} infolinks/k8s-cloudflared:latest
+      - gcloud docker -- push infolinks/k8s-cloudflared:latest

README.md

@@ -1,6 +1,6 @@
 # k8s-cloudflared
 
-[![Build Status](https://travis-ci.org/infolinks/k8s-cloudflared.svg?branch=master)](https://travis-ci.org/infolinks/k8s-cloudflared)
+[![Build status](https://badge.buildkite.com/8e3145c6e8516acd680b71ea97e5bfa18073f9ee4eb286126c.svg)](https://buildkite.com/infolinks/k8s-cloudflared)
 
 Container for continually updating Cloudflare DNS records for Kubernetes
 `Service` and `Ingress` objects found in a cluster.
@@ -42,7 +42,9 @@ to point to `1.2.3.4` in Cloudflare.
 
 ## Ingress Resources
 
-The same applies to `Ingress` resources in the cluster.
+The same applies to `Ingress` resources in the cluster, but you don't
+have to define the `dns` annotation - the host names will be taken
+automatically from the host rules.
 
 ## Deployment
 

cloudflared.sh

@@ -1,28 +1,28 @@
 #!/usr/bin/env bash
 
-AUTH_EMAIL_FILE=./conf/cf_auth_email.txt
-AUTH_KEY_FILE=./conf/cf_auth_key.txt
-DOMAIN_FILE=./conf/cf_domain.txt
+# small IntelliJ hack to prevent warning on non-existing variables
+if [[ "THIS_WILL_NEVER_BE_TRUE" == "true" ]]; then
+    DOMAIN=${DOMAIN}
+    AUTH_EMAIL=${AUTH_EMAIL}
+    AUTH_KEY=${AUTH_KEY}
+fi
 
 while true; do
     # read domain name
-    [[ -e "${DOMAIN_FILE}" ]] && DOMAIN=$(cat ${DOMAIN_FILE})
     if [[ -z "${DOMAIN}" ]]; then
-        echo "DOMAIN not defined, and empty Cloudflare domain at '${DOMAIN_FILE}'!" >&2
+        echo "DOMAIN environment variable not defined" >&2
         exit 1
     fi
 
     # read Cloudflare authentication Email
-    [[ -e "${AUTH_EMAIL_FILE}" ]] && AUTH_EMAIL=$(cat ${AUTH_EMAIL_FILE})
     if [[ -z "${AUTH_EMAIL}" ]]; then
-        echo "AUTH_EMAIL not defined, and empty Cloudflare authentication Email at '${AUTH_EMAIL_FILE}'!" >&2
+        echo "AUTH_EMAIL environment variable not defined" >&2
         exit 1
     fi
 
     # read Cloudflare authentication key
-    [[ -e "${AUTH_KEY_FILE}" ]] && AUTH_KEY=$(cat ${AUTH_KEY_FILE})
     if [[ -z "${AUTH_KEY}" ]]; then
-        echo "AUTH_KEY not defined, and empty Cloudflare authentication key at '${AUTH_KEY_FILE}'!" >&2
+        echo "AUTH_KEY environment variable not defined" >&2
         exit 1
     fi