jenkins-controller-eclair: initial commit for repo with jenkins-controller

Import the jenkins-controller-eclair dockerfile as the first dockerfile
of the repo.

Since this is also the first commit of the repo, let's also bootstrap
a README.md and setup a gitignore to ignore the .docker-tag files.

Change-Id: I645516415b9f33d76bcac26f664f32651f05adcc
diff --git a/jenkins-controller-eclair/build.sh b/jenkins-controller-eclair/build.sh
new file mode 100755
index 0000000..e7c651b
--- /dev/null
+++ b/jenkins-controller-eclair/build.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -e
+
+export LANG=C
+
+tag=$(basename $PWD)
+
+[ -z $ECR ] && echo "Error: ECR environment variable not set" && exit 1
+
+image=${ECR}/misra:$tag
+docker build --pull --tag=$image .
+echo $image > .docker-tag