Use GitHub Action to publish orbs

It uses circleci/circleci-cli:alpine docker image that already
has CircleCI CLI installed. We use a secret with our key to publish
orbs in our namespace.

For now, to change the version you need to manually change the
entrypoint.sh file.

Author: kennyadsl

.github/main.workflow

@@ -0,0 +1,9 @@
+workflow "Release a new version" {
+  on = "push"
+  resolves = ["publish-on-orbs-registry"]
+}
+
+action "publish-on-orbs-registry" {
+  uses = "./publish-on-orbs-registry/"
+  secrets = ["CIRCLECI_TOKEN"]
+}

publish-on-orbs-registry/Dockerfile

@@ -0,0 +1,13 @@
+FROM circleci/circleci-cli:alpine
+
+LABEL "com.github.actions.name"="Publish Orb on CircleCI Registry"
+LABEL "com.github.actions.description"="Publish Orb on CircleCI Registry"
+LABEL "com.github.actions.icon"="mic"
+LABEL "com.github.actions.color"="black"
+
+LABEL "repository"="http://github.com/nebulab/circleci-orbs-feature-branch-preview"
+LABEL "homepage"="http://github.com/nebulab/circleci-orbs-feature-branch-preview"
+LABEL "maintainer"="kennyadsl <[email protected]>"
+
+ADD entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

publish-on-orbs-registry/entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/sh -l
+
+# Setup using the secret CIRCLECI_TOKEN
+circleci setup --no-prompt --token $CIRCLECI_TOKEN
+
+# Publish the orb on CircleCI Orbs Registry
+circleci orb publish source.yml nebulab/feature-branch-preview@dev:0.0.1