[WIP] 🏃 Verify Emoji with GH actions

.github/pr-checks.workflow

@@ -0,0 +1,8 @@
+workflow "PR Checks" {
+    on = "pull_request"
+    resolves = ["verify-emoji"]
+}
+
+action "verify-emoji" {
+    uses = "./hack/release/"
+}

hack/release/Dockerfile

@@ -0,0 +1,11 @@
+FROM alpine
+
+LABEL com.github.actions.name="KubeBuilder PR Emoji"
+LABEL com.github.actions.name="Verify that KubeBuilder release notes emoji are present on the PR"
+LABEL com.github.actions.icon="git-pull-request"
+LABEL com.github.actions.color="blue"
+
+COPY common.sh /common.sh
+COPY verify-emoji.sh /verify-emoji.sh
+
+ENTRYPOINT ["/verify-emoji.sh"]

hack/release/common.sh

@@ -6,6 +6,7 @@ cr_minor_pattern=":sparkles:|$(printf "\xe2\x9c\xa8")"
 cr_patch_pattern=":bug:|$(printf "\xf0\x9f\x90\x9b")"
 cr_docs_pattern=":book:|$(printf "\xf0\x9f\x93\x96")"
 cr_other_pattern=":running:|$(printf "\xf0\x9f\x8f\x83")"
+cr_all_pattern="${cr_major_pattern}|${cr_minor_pattern}|${cr_patch_pattern}|${cr_docs_pattern}|${cr_other_pattern}"
 
 # cr::symbol-type-raw turns :xyz: and the corresponding emoji
 # into one of "major", "minor", "patch", "docs", "other", or

hack/release/verify-emoji.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+set -eu
+set -o pipefail
+
+pr_title=$(jq '.pull_request.title' < ${GITHUB_EVENT_PATH})
+
+read pr_prefix rest <<<${pr_title}
+
+source "$(dirname ${BASH_SOURCE})/common.sh"
+
+pr_type=$(cr::symbol-type ${pr_prefix})
+
+if [[ ${pr_type} == "unknown" ]]; then
+    echo "You must specify an emoji at the beginning of the PR to indicate what kind of change this is."
+    echo "Valid emoji: ${cr_all_pattern}."
+    echo "See VERSIONING.md for more information."
+    exit 1
+fi
+
+echo "PR is a ${pr_type} change (${pr_prefix})."
+exit 0