Move from Docker to TS/Node

src/main.ts

@@ -0,0 +1,10 @@
+import * as core from '@actions/core'
+import * as exec from '@actions/exec'
+
+const cwd = process.env.GITHUB_WORKSPACE || '/github/workspace'
+
+try {
+  exec.exec('./entrypoint.sh', [], { cwd })
+} catch (e) {
+  core.setFailed(e)
+}