diff --git a/.circleci/config.yml b/.circleci/_config.yml
similarity index 100%
rename from .circleci/config.yml
rename to .circleci/_config.yml
diff --git a/.github/workflows/build_backend.yml b/.github/workflows/build_backend.yml
index 4eddddf0..568c391d 100644
--- a/.github/workflows/build_backend.yml
+++ b/.github/workflows/build_backend.yml
@@ -11,7 +11,7 @@ jobs:
     container: coderbot/coderbot-ci:3.9-bullseye-slim
     steps:
     - uses: actions/checkout@v3 # Checking out the repo
-    - run: pip install -r requirements_stub.txt
+    - run: pip install -r docker/stub/requirements.txt
     - run: |
         export PYTHONPATH=./coderbot:./stub:./test
         mkdir test-reports
@@ -58,7 +58,7 @@ jobs:
           type=ref,event=pr
           # push event
           type=sha,enable=true,prefix=git-,format=short
-    - uses: actions/checkout@v2 # Checking out the repo
+    - uses: actions/checkout@v3 # Checking out the repo
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v2
     - name: Set up Docker Buildx
@@ -74,9 +74,46 @@ jobs:
       uses: docker/build-push-action@v3
       with:
           push: true
+          build-args: CODERBOT_VERSION=${{github.ref_name}}-${{github.sha}}
           platforms: linux/arm/v7
           tags: ${{ steps.meta.outputs.tags }}
           context: .
           file: docker/Dockerfile
           cache-from: type=registry,ref=ghcr.io/coderbotorg/backend:latest
           cache-to: type=inline
+
+  release-stub:
+    needs: [test]
+    runs-on: ubuntu-latest
+    steps:
+    - name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        # list of Docker images to use as base name for tags
+        images: ghcr.io/coderbotorg/backend
+        # generate Docker tags based on the following events/attributes
+        tags: |
+          # always latest
+          type=raw,value=stub-latest
+    - uses: actions/checkout@v3 # Checking out the repo
+    - name: Set up Docker Buildx
+      id: buildx
+      uses: docker/setup-buildx-action@v2
+    - name: Login to DockerHub
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    - name: Build and push
+      uses: docker/build-push-action@v3
+      with:
+          push: true
+          build-args: CODERBOT_VERSION=${{github.ref_name}}-${{github.sha}}
+          platforms: linux/amd64
+          tags: ${{ steps.meta.outputs.tags }}
+          context: .
+          file: docker/stub/Dockerfile
+          cache-from: type=registry,ref=ghcr.io/coderbotorg/backend:stub-latest
+          cache-to: type=inline
diff --git a/coderbot/activity.py b/coderbot/activity.py
index f2864c07..19e3d102 100644
--- a/coderbot/activity.py
+++ b/coderbot/activity.py
@@ -1,5 +1,5 @@
 from tinydb import TinyDB, Query
-
+from threading import Lock
 # Programs and Activities databases
 class Activities():
     _instance = None
@@ -13,34 +13,39 @@ def get_instance(cls):
     def __init__(self):
         self.activities = TinyDB("data/activities.json")
         self.query = Query()
+        self.lock = Lock()
 
     def load(self, name, default):
-        if name and default is None:
-            activities = self.activities.search(self.query.name == name)
-            if len(activities) > 0:
-                return activities[0]
-        elif default is not None:
-            if len(self.activities.search(self.query.default == True)) > 0:
-                return self.activities.search(self.query.default == True)[0]
+        with self.lock: 
+            if name and default is None:
+                activities = self.activities.search(self.query.name == name)
+                if len(activities) > 0:
+                    return activities[0]
+            elif default is not None:
+                if len(self.activities.search(self.query.default == True)) > 0:
+                    return self.activities.search(self.query.default == True)[0]
+                return None
             return None
-        return None
 
     def save(self, name, activity):
-        # if saved activity is "default", reset existing default activity to "non-default"
-        if activity.get("default", False) is True:
-            self.activities.update({'default': False})
-        if self.activities.search(self.query.name == name) == []:
-            self.activities.insert(activity)
-        else:
-            self.activities.update(activity, self.query.name == activity["name"])
+        with self.lock: 
+            # if saved activity is "default", reset existing default activity to "non-default"
+            if activity.get("default", False) is True:
+                self.activities.update({'default': False})
+            if self.activities.search(self.query.name == name) == []:
+                self.activities.insert(activity)
+            else:
+                self.activities.update(activity, self.query.name == activity["name"])
 
     def delete(self, name):
-        activities = self.activities.search(self.query.name == name)
-        if len(activities) > 0:
-            activity = activities[0]
-            if activity.get("default", False) is True:
-                self.activities.update({'default': True}, self.query.stock == True)
-            self.activities.remove(self.query.name == activity["name"])
+        with self.lock: 
+            activities = self.activities.search(self.query.name == name)
+            if len(activities) > 0:
+                activity = activities[0]
+                if activity.get("default", False) is True:
+                    self.activities.update({'default': True}, self.query.stock == True)
+                self.activities.remove(self.query.name == activity["name"])
 
     def list(self):
-        return self.activities.all()
+        with self.lock: 
+            return self.activities.all()
diff --git a/coderbot/api.py b/coderbot/api.py
index 15d1e237..6b596e76 100644
--- a/coderbot/api.py
+++ b/coderbot/api.py
@@ -68,14 +68,14 @@ def get_status():
     uptime = 0
     try:
         uptime = subprocess.check_output(["uptime"]).decode('utf-8').replace('\n', '')
-    except:
+    except Exception:
         pass
 
     internet_status = False
     try:
         urllib.request.urlopen("https://coderbot.org") 
         internet_status = True
-    except:
+    except Exception:
         pass
 
     return {'internet_status': internet_status,
@@ -87,42 +87,20 @@ def get_info():
     Expose informations about the CoderBot system.
     (Cached method)
     """
-    backend_commit = "undefined"
-    coderbot_version = "undefined"
-    update_status = "ok"
     device = {}
-    motors = 'undefined'
-    
-    try:
-        # manifest.json is generated while building/copying the backend
-        with open('manifest.json', 'r') as f:
-            metadata = json.load(f)
-            backend_commit = metadata["backend_commit"][0:7]
-            coderbot_version = metadata["backend_version"][0:7]
-    except Exception:
-        pass
-
-    try:
-        encoder = bool(Config.read().get('encoder'))
-        if(encoder):
-            motors = 'DC encoder motors'
-        else:
-            motors = 'DC motors'
-    except Exception:
-        pass
-
     serial = get_serial()
 
     try:
-        device = Baleba.get_instance().device()
+        device = Balena.get_instance().device()
+        logging.info("device: %s", str(device))
     except Exception:
         pass
-    return { 'backend_commit': device.get("commit"),
-             'coderbot_version': coderbot_version,
+
+    return { 'release_commit': device.get("commit"),
+             'coderbot_version': os.getenv("CODERBOT_VERSION"),
              'update_status': device.get("status"),
              'kernel': device.get("os_version"),
-             'serial': serial,
-             'motors': motors }
+             'serial': serial }
 
 prog = None
 prog_engine = ProgramEngine.get_instance()
@@ -249,39 +227,6 @@ def deletePhoto(name):
     except FileNotFoundError:
         return 404
 
-## System
-
-def status():
-    sts = get_status()
-    # getting reset log file
-    data = []
-    try:
-        with open('/home/pi/coderbot/logs/reset_trigger_service.log', 'r') as log_file:
-            data = [x for x in log_file.read().split('\n') if x]
-    except Exception: # direct control case
-        pass # if file doesn't exist, no restore as ever been performed. return empty data
-
-
-    return {
-        "status": "ok",
-        "internetConnectivity": sts["internet_status"],
-        "temp": sts["temp"],
-        "uptime": sts["uptime"],
-        "log": data
-    }
-
-def info():
-    inf = get_info()
-    return {
-        "model": 1,
-        "version": inf["coderbot_version"],
-        "backend commit build": inf["backend_commit"],
-        "kernel" : inf["kernel"],
-        "update status": inf["update_status"],
-        "serial": inf["serial"],
-        "motors": inf["motors"]
-    }
-
 def restoreSettings():
     Config.restore()
     return restart()
diff --git a/coderbot/balena/__init__.py b/coderbot/balena/__init__.py
index 5b5c9f9f..9df7c43f 100644
--- a/coderbot/balena/__init__.py
+++ b/coderbot/balena/__init__.py
@@ -21,24 +21,24 @@ def __init__(self):
     def purge(self):
         logging.debug("reset bot")
         req = Request(f'{self.supervisor_address}/v1/purge?apikey={self.supervisor_key}', data=self.app_id_data, headers=self.headers, method='POST')
-        return urlopen(req).read()
+        return json.load(urlopen(req))
 
     def shutdown(self):
         logging.debug("shutdown bot")
         req = Request(f'{self.supervisor_address}/v1/shutdown?apikey={self.supervisor_key}', headers=self.headers, method='POST')
-        return urlopen(req).read()
+        return json.load(urlopen(req))
 
     def restart(self):
         logging.debug("restarting bot")
         req = Request(f'{self.supervisor_address}/v1/restart?apikey={self.supervisor_key}', data=self.app_id_data, headers=self.headers, method='POST')
-        return urlopen(req).read()
+        return json.load(urlopen(req))
 
     def reboot(self):
         logging.debug("reboot bot")
         req = Request(f'{self.supervisor_address}/v1/reboot?apikey={self.supervisor_key}', headers=self.headers, method='POST')
-        return urlopen(req).read()
+        return json.load(urlopen(req))
 
     def device(self):
         logging.debug("reboot bot", f'{self.supervisor_address}get?apikey={self.supervisor_key}')
-        req = Request(f'{self.supervisor_address}/device?apikey={self.supervisor_key}', headers=self.headers, method='GET')
+        req = Request(f'{self.supervisor_address}/v1/device?apikey={self.supervisor_key}', headers=self.headers, method='GET')
         return json.load(urlopen(req))
diff --git a/coderbot/program.py b/coderbot/program.py
index 67153ddf..d76395fd 100644
--- a/coderbot/program.py
+++ b/coderbot/program.py
@@ -25,6 +25,7 @@
 
 import math
 from tinydb import TinyDB, Query
+from threading import Lock
 
 import coderbot
 import camera
@@ -80,6 +81,7 @@ def __init__(self):
         self._programs = TinyDB(PROGRAMS_DB)
         # initialise DB from default programs
         query = Query()
+        self.lock = Lock()
         for dirname, dirnames, filenames, in os.walk(PROGRAMS_PATH_DEFAULTS):
             dirnames
             for filename in filenames:
@@ -102,28 +104,31 @@ def prog_list(self):
         return self._programs.all()
 
     def save(self, program):
-        query = Query()
-        self._program = program
-        program_db_entry = self._program.as_dict()
-        if self._programs.search(query.name == program.name) != []:
-            self._programs.update(program_db_entry, query.name == program.name)
-        else:
-            self._programs.insert(program_db_entry)
+        with self.lock: 
+            query = Query()
+            self._program = program
+            program_db_entry = self._program.as_dict()
+            if self._programs.search(query.name == program.name) != []:
+                self._programs.update(program_db_entry, query.name == program.name)
+            else:
+                self._programs.insert(program_db_entry)
 
     def load(self, name):
-        query = Query()
-        program_db_entries = self._programs.search(query.name == name)
-        if len(program_db_entries) > 0:
-            prog_db_entry = program_db_entries[0]
-            logging.debug(prog_db_entry)
-            self._program = Program.from_dict(prog_db_entry)
-            return self._program
-        return None
+        with self.lock: 
+            query = Query()
+            program_db_entries = self._programs.search(query.name == name)
+            if len(program_db_entries) > 0:
+                prog_db_entry = program_db_entries[0]
+                logging.debug(prog_db_entry)
+                self._program = Program.from_dict(prog_db_entry)
+                return self._program
+            return None
 
     def delete(self, name):
-        query = Query()
-        program_db_entries = self._programs.search(query.name == name)
-        self._programs.remove(query.name == name)
+        with self.lock: 
+            query = Query()
+            program_db_entries = self._programs.search(query.name == name)
+            self._programs.remove(query.name == name)
 
     def create(self, name, code):
         self._program = Program(name, code)
diff --git a/coderbot/v1.yml b/coderbot/v1.yml
index f987579d..150c5bfa 100644
--- a/coderbot/v1.yml
+++ b/coderbot/v1.yml
@@ -397,7 +397,7 @@ paths:
           description: "upload failed"
   /system/status:
     get:
-      operationId: "api.status"
+      operationId: "api.get_status"
       summary: "Bot general informations, execution status and reset log file"
       tags:
         - System operations
@@ -422,7 +422,7 @@ paths:
           description: Test ended.
   /system/info:
     get:
-      operationId: "api.info"
+      operationId: "api.get_info"
       summary: "Bot general informations and execution status"
       tags:
         - System operations
diff --git a/docker/Dockerfile b/docker/Dockerfile
index f2ee6362..6b88fce8 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -50,7 +50,6 @@ RUN pip install --no-cache-dir -r /tmp/requirements.txt
 RUN mkdir -p /coderbot && \
 mkdir -p /coderbot/data && \
 mkdir -p /coderbot/logs && \
-mkdir -p /coderbot/updatePackages && \
 mkdir -p /coderbot/cnn_modules && \
 mkdir -p /coderbot/coderbot && \
 mkdir -p /coderbot/defaults && \
@@ -63,5 +62,9 @@ ADD sounds /coderbot/sounds/.
 ADD docker/scripts/*.sh /tmp/.
 RUN /tmp/install_generic_cnn_models.sh
 RUN /tmp/install_lib_firmware.sh
+ADD docker/start.sh /coderbot/.
 
-ENTRYPOINT cd /coderbot && modprobe i2c-dev && python3 coderbot/main.py
+ARG CODERBOT_VERSION
+ENV CODERBOT_VERSION=${CODERBOT_VERSION}
+
+ENTRYPOINT /coderbot/start.sh
diff --git a/docker/start.sh b/docker/start.sh
new file mode 100755
index 00000000..672297f1
--- /dev/null
+++ b/docker/start.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+cd /coderbot && modprobe i2c-dev && python3 coderbot/main.py
\ No newline at end of file
diff --git a/docker/stub/Dockerfile b/docker/stub/Dockerfile
new file mode 100644
index 00000000..aaf42d81
--- /dev/null
+++ b/docker/stub/Dockerfile
@@ -0,0 +1,65 @@
+FROM debian:bullseye-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update -y && apt-get install -y \
+ procps \
+ sudo \
+ wget \
+ unzip \
+ xz-utils \
+ ffmpeg \
+ portaudio19-dev \
+ python3 \
+ python3-pip \
+ libopenjp2-7-dev \
+ libtiff5 \
+ libatlas-base-dev \
+ libhdf5-dev \
+ alsa-utils \
+ espeak \
+ libharfbuzz-bin \
+ libwebp6 \
+ libilmbase25 \
+ libgstreamer1.0-0 \
+ libavcodec-extra58 \
+ libavformat58 \
+ libopencv-dev \
+ zbar-tools \
+ libzbar0 \
+ sox \
+ libsox-fmt-all \
+ avrdude \
+ tesseract-ocr \
+ tesseract-ocr-eng \
+ tesseract-ocr-ita \
+ tesseract-ocr-fra \
+ tesseract-ocr-spa \
+ tesseract-ocr-deu
+
+ADD docker/stub/requirements.txt /tmp/.
+RUN pip install --no-cache-dir -r /tmp/requirements.txt
+
+RUN mkdir -p /coderbot && \
+mkdir -p /coderbot/data && \
+mkdir -p /coderbot/logs && \
+mkdir -p /coderbot/updatePackages && \
+mkdir -p /coderbot/cnn_modules && \
+mkdir -p /coderbot/coderbot && \
+mkdir -p /coderbot/defaults && \
+mkdir -p /coderbot/sounds
+
+ADD coderbot /coderbot/coderbot/.
+ADD stub /coderbot/stub/.
+ADD test /coderbot/test/.
+ADD defaults /coderbot/defaults/.
+ADD sounds /coderbot/sounds/.
+
+ADD docker/scripts/*.sh /tmp/.
+RUN /tmp/install_generic_cnn_models.sh
+ADD docker/stub/start.sh /coderbot/.
+
+ARG CODERBOT_VERSION
+ENV CODERBOT_VERSION=${CODERBOT_VERSION}
+
+ENTRYPOINT /coderbot/start.sh
diff --git a/requirements_stub.txt b/docker/stub/requirements.txt
similarity index 85%
rename from requirements_stub.txt
rename to docker/stub/requirements.txt
index 7f5cd482..925819f3 100644
--- a/requirements_stub.txt
+++ b/docker/stub/requirements.txt
@@ -26,17 +26,9 @@ pybind11==2.10.0
 inflection==0.5.1
 event-channel==0.4.3
 pytz==2022.2.1
-cachetools==5.2.0
-
-# IO extensions
-pigpio==1.78
-smbus2==0.4.2
-spidev==3.5
 
 # Audio
 sox==1.4.1
-PyAudio==0.2.12
-pyalsaaudio==0.9.2
 
 # Computer Vision
 grpcio==1.48.1
@@ -48,4 +40,5 @@ tflite-runtime==2.10.0
 pytesseract==0.3.10
 pyzbar==0.1.9
 
-#picamera==1.13
+#I/O
+spidev==3.5
diff --git a/docker/stub/start.sh b/docker/stub/start.sh
new file mode 100755
index 00000000..ff2ed337
--- /dev/null
+++ b/docker/stub/start.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+export PYTHONPATH=./stub:./test:./coderbot
+cd /coderbot
+python3 coderbot/main.py
\ No newline at end of file
diff --git a/logs/.gitkeep b/logs/.gitkeep
deleted file mode 100644
index e69de29b..00000000
diff --git a/updatePackages/.gitkeep b/updatePackages/.gitkeep
deleted file mode 100644
index e69de29b..00000000