feat: use npx for automdated dep install

.github/main.workflow

@@ -8,12 +8,18 @@ action "Shell Lint" {
   args = "entrypoint.sh"
 }
 
-action "Build" {
+action "Build Docker" {
   needs = ["Shell Lint"]
   uses = "actions/docker/cli@master"
   args = "build -t npm ."
 }
 
+action "Build" {
+  needs = ["Build Docker"]
+  uses = "actions/npm@master"
+  args = "install"
+}
+
 action "Docker Tag" {
   needs = ["Build"]
   uses = "actions/docker/tag@master"

entrypoint.sh

@@ -12,4 +12,9 @@ if [ -n "$NPM_AUTH_TOKEN" ]; then
   chmod 0600 "$NPM_CONFIG_USERCONFIG"
 fi
 
-sh -c "node /merge-release-run.js $*"
+if [ $GITHUB_REPOSITORY == "mikeal/merge-release" ]
+then
+  sh -c "node /merge-release-run.js $*"
+else
+  sh -c "npx merge-release $*"
+fi