WIP: test if we can use pure zephyr without ncs

.github/workflows/build.yml

@@ -9,26 +9,25 @@ on:
 jobs:
   build:
     runs-on: ubuntu-22.04
-    container: ghcr.io/zephyrproject-rtos/ci:v0.26.5
-    env:
-      CMAKE_PREFIX_PATH: /opt/toolchains
     steps:
       - name: Checkout
         uses: actions/checkout@v4
         with:
           path: thingsboard
 
-      - name: Initialize
-        run: |
-          west init -l thingsboard
-          west update -o=--depth=1 -n
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.11
 
-      - name: Install Python Dependencies
-        run: pip install -r thingsboard/scripts/requirements.txt
+      - name: Setup Zephyr project
+        uses: zephyrproject-rtos/action-zephyr-setup@v1
+        with:
+          app-path: thingsboard
+          toolchains: arm-zephyr-eabi
 
       - name: Twister Tests
-        # bash is needed for source to be working
+        working-directory: thingsboard
         shell: bash
         run: |
-          source zephyr/zephyr-env.sh
-          zephyr/scripts/twister -i -T thingsboard
+          west twister -T tests -v --inline-logs --integration

west.yml

@@ -1,18 +1,3 @@
 manifest:
-  defaults:
-    remote: github
-
-  remotes:
-    - name: github
-      url-base: https://github.com/
-
-  projects:
-    - name: nrf
-      remote: github
-      repo-path: nrfconnect/sdk-nrf
-      revision: v2.7.0
-      path: nrf
-      import: true
-
   self:
     path: modules/thingsboard