initial CI builds for push to main

Author: topherbuckley

.github/workflows/build-firmware.yml

@@ -0,0 +1,18 @@
+name: build-firmware
+on:
+  push:
+    branches: [ main, actions ]
+jobs:
+  build-in-container:
+    runs-on: ubuntu-latest
+    container:
+      image: lukstep/raspberry-pi-pico-sdk:v0.0.2
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+      - name: pwd
+        run: pwd
+      - name: ls
+        run: ls -al
+      - name: build
+        run: ./b.sh

b.sh

@@ -1,5 +1,3 @@
-#!/usr/bin/bash
-
 cd external
 rm -rf build
 mkdir build