Aggiunta configurazione tramite variabili d'ambiente e fix Docker Hub secrets

- Aggiunto supporto ENV variables nel Dockerfile:
  * INVERTER_DEVICE, MQTT_SERVER, MQTT_PORT, MQTT_TOPIC
  * MQTT_DEVICENAME, MQTT_USERNAME, MQTT_PASSWORD
  * FORCE_DISCOVERY, SKIP_DISCOVERY
- Implementata funzione update_mqtt_config() in entrypoint.sh
  * Aggiorna automaticamente mqtt.json da ENV variables all'avvio
  * Backup automatico configurazione originale
- Fix workflow Docker build:
  * Login Docker Hub solo se secrets configurati
  * Push solo se secrets disponibili (evita errori CI/CD)
  * Build funziona anche senza secrets (utile per test locali)
- Aggiornato docker-compose.yml con esempio ENV variables
- Creata documentazione completa DOCKER_SETUP.md:
  * Guida configurazione variabili d'ambiente
  * Esempi docker-compose e docker run
  * Guida configurazione secrets Gitea
  * Troubleshooting e health check

Ora è possibile configurare completamente il container senza modificare file

.gitea/workflows/docker-build.yml

@@ -43,7 +43,7 @@ jobs:
             type=raw,value=latest,enable={{is_default_branch}}
 
       - name: Login to Docker Hub
-        if: github.event_name != 'pull_request'
+        if: github.event_name != 'pull_request' && secrets.DOCKER_USERNAME != ''
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
@@ -55,7 +55,7 @@ jobs:
           context: .
           file: ./Dockerfile.multiarch
           platforms: linux/arm/v6,linux/arm/v7,linux/arm64
-          push: ${{ github.event_name != 'pull_request' }}
+          push: ${{ github.event_name != 'pull_request' && secrets.DOCKER_USERNAME != '' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           build-args: |

Dockerfile.multiarch

@@ -24,6 +24,17 @@ ADD config/ /etc/inverter/
 RUN cd /opt/inverter-cli && \
     mkdir bin && cmake . && make
 
+# Environment variables for runtime configuration
+ENV INVERTER_DEVICE="/dev/ttyUSB0" \
+    MQTT_SERVER="192.168.1.37" \
+    MQTT_PORT="1883" \
+    MQTT_TOPIC="homeassistant" \
+    MQTT_DEVICENAME="voltronic" \
+    MQTT_USERNAME="" \
+    MQTT_PASSWORD="" \
+    FORCE_DISCOVERY="false" \
+    SKIP_DISCOVERY="false"
+
 HEALTHCHECK \
     --interval=30s \
     --timeout=10s \

docker-compose.yml

@@ -19,9 +19,18 @@ services:
 
     # Environment variables for auto-discovery
     environment:
-      # Default device (can be ttyUSB0, ttyUSB1, ttyS0, hidraw0, etc.)
+      # Device configuration
-      - INVERTER_DEVICE=/dev/ttyUSB1
+      - INVERTER_DEVICE=/dev/ttyUSB0
       
+      # MQTT Broker configuration
+      - MQTT_SERVER=192.168.1.37
+      - MQTT_PORT=1883
+      - MQTT_TOPIC=homeassistant
+      - MQTT_DEVICENAME=voltronic
+      - MQTT_USERNAME=mqtt_user
+      - MQTT_PASSWORD=your_password_here
+      
+      # Auto-discovery options
       # Force auto-discovery on every container start (default: false)
       # Set to "true" to re-run discovery even if previous results exist
       - FORCE_DISCOVERY=false

documentation/DOCKER_SETUP.md

@@ -0,0 +1,203 @@
+# Docker Setup e Configurazione
+
+## Variabili d'Ambiente
+
+Il container supporta la configurazione tramite variabili d'ambiente per massima flessibilità.
+
+### Variabili Disponibili
+
+| Variabile | Descrizione | Default |
+|-----------|-------------|---------|
+| `INVERTER_DEVICE` | Device seriale inverter | `/dev/ttyUSB0` |
+| `MQTT_SERVER` | Indirizzo IP/hostname broker MQTT | `192.168.1.37` |
+| `MQTT_PORT` | Porta broker MQTT | `1883` |
+| `MQTT_TOPIC` | Topic base MQTT | `homeassistant` |
+| `MQTT_DEVICENAME` | Nome device per i topic | `voltronic` |
+| `MQTT_USERNAME` | Username autenticazione MQTT | (vuoto) |
+| `MQTT_PASSWORD` | Password autenticazione MQTT | (vuoto) |
+| `FORCE_DISCOVERY` | Forza discovery ad ogni avvio | `false` |
+| `SKIP_DISCOVERY` | Salta discovery, usa solo config | `false` |
+
+### Esempio docker-compose.yml
+
+```yaml
+version: '3'
+
+services:
+  voltronic-mqtt:
+    image: bushrangers/ha-voltronic-mqtt
+    container_name: voltronic-mqtt
+    privileged: true
+    restart: always
+    
+    environment:
+      # Device configuration
+      - INVERTER_DEVICE=/dev/ttyUSB0
+      
+      # MQTT Broker configuration
+      - MQTT_SERVER=192.168.1.100
+      - MQTT_PORT=1883
+      - MQTT_TOPIC=homeassistant
+      - MQTT_DEVICENAME=voltronic
+      - MQTT_USERNAME=mqtt_user
+      - MQTT_PASSWORD=secret_password
+      
+      # Discovery options
+      - FORCE_DISCOVERY=false
+      - SKIP_DISCOVERY=false
+    
+    volumes:
+      - ./config/:/etc/inverter/
+    
+    devices:
+      - /dev/ttyUSB0:/dev/ttyUSB0:rwm
+      - /dev/ttyUSB1:/dev/ttyUSB1:rwm
+```
+
+### Esempio docker run
+
+```bash
+docker run -d \
+  --name voltronic-mqtt \
+  --privileged \
+  --restart always \
+  -e INVERTER_DEVICE=/dev/ttyUSB0 \
+  -e MQTT_SERVER=192.168.1.100 \
+  -e MQTT_PORT=1883 \
+  -e MQTT_USERNAME=mqtt_user \
+  -e MQTT_PASSWORD=secret_password \
+  -v $(pwd)/config:/etc/inverter/ \
+  --device=/dev/ttyUSB0:/dev/ttyUSB0:rwm \
+  bushrangers/ha-voltronic-mqtt
+```
+
+## Topic MQTT Pubblicati
+
+Con configurazione default (`MQTT_DEVICENAME=voltronic`):
+
+### Singolo Inverter
+```
+homeassistant/sensor/voltronic_Battery_voltage
+homeassistant/sensor/voltronic_Load_watt
+homeassistant/sensor/voltronic_PV_in_voltage
+... (e altri)
+```
+
+### Multi-Inverter Paralleli
+```
+homeassistant/sensor/voltronic_inv1_serial
+homeassistant/sensor/voltronic_inv1_Battery_voltage
+homeassistant/sensor/voltronic_inv1_Load_watt
+homeassistant/sensor/voltronic_inv2_serial
+homeassistant/sensor/voltronic_inv2_Battery_voltage
+homeassistant/sensor/voltronic_inv2_Load_watt
+... (e altri)
+```
+
+## Build Locale
+
+### Build Semplice (architettura corrente)
+```bash
+docker build -f Dockerfile.multiarch -t voltronic-mqtt:local .
+```
+
+### Build Multi-Arch (richiede buildx)
+```bash
+docker buildx build \
+  --platform linux/arm/v6,linux/arm/v7,linux/arm64 \
+  -f Dockerfile.multiarch \
+  -t voltronic-mqtt:multi-arch \
+  --load \
+  .
+```
+
+## Configurazione Secrets Gitea (per CI/CD)
+
+Se vuoi abilitare il push automatico su Docker Hub tramite Gitea Actions:
+
+1. Vai su Gitea → Repository → Settings → Secrets
+2. Aggiungi i seguenti secrets:
+   - `DOCKER_USERNAME`: tuo username Docker Hub
+   - `DOCKER_PASSWORD`: token di accesso Docker Hub (o password)
+
+**Nota:** Se i secrets non sono configurati, il workflow eseguirà comunque la build ma **non farà push** su Docker Hub (utile per testing).
+
+### Creare un Access Token Docker Hub
+
+1. Login su https://hub.docker.com
+2. Account Settings → Security → New Access Token
+3. Copia il token generato
+4. Usa questo token come `DOCKER_PASSWORD` in Gitea
+
+## Troubleshooting
+
+### Container non si avvia
+
+**Verifica device:**
+```bash
+ls -la /dev/ttyUSB*
+```
+
+**Verifica permessi:**
+```bash
+# Aggiungi utente al gruppo dialout
+sudo usermod -a -G dialout $USER
+
+# Riavvia la sessione o logout/login
+```
+
+### MQTT non funziona
+
+**Test connessione MQTT:**
+```bash
+docker exec -it voltronic-mqtt bash -c "mosquitto_pub -h \$MQTT_SERVER -p \$MQTT_PORT -u \$MQTT_USERNAME -P \$MQTT_PASSWORD -t test/voltronic -m 'test'"
+```
+
+**Verifica topic pubblicati:**
+```bash
+mosquitto_sub -h 192.168.1.100 -p 1883 -u mqtt_user -P password -v -t "homeassistant/sensor/voltronic_#"
+```
+
+### Discovery fallisce
+
+**Forza re-discovery:**
+```bash
+docker restart voltronic-mqtt
+# oppure
+docker stop voltronic-mqtt
+docker rm voltronic-mqtt
+docker-compose up -d
+```
+
+**Test manuale discovery:**
+```bash
+docker exec -it voltronic-mqtt bash -c '/opt/inverter-cli/bin/inverter_poller -d -a'
+```
+
+### Verificare logs
+
+```bash
+# Logs real-time
+docker logs -f voltronic-mqtt
+
+# Ultimi 100 righe
+docker logs --tail 100 voltronic-mqtt
+
+# Logs con timestamp
+docker logs -t voltronic-mqtt
+```
+
+## Health Check
+
+Il container include un healthcheck automatico che verifica:
+- Processo inverter_poller attivo
+- Comunicazione con l'inverter funzionante
+
+Status:
+```bash
+docker ps
+# Colonna STATUS mostra "healthy" o "unhealthy"
+
+# Dettagli healthcheck
+docker inspect --format='{{json .State.Health}}' voltronic-mqtt | jq
+```

sources/inverter-mqtt/entrypoint.sh

@@ -14,13 +14,50 @@ TEMP_CONF="/tmp/inverter_discovered.conf"
 INVERTER_DEVICE="${INVERTER_DEVICE:-/dev/ttyUSB0}"
 FORCE_DISCOVERY="${FORCE_DISCOVERY:-false}"
 SKIP_DISCOVERY="${SKIP_DISCOVERY:-false}"
+MQTT_SERVER="${MQTT_SERVER:-192.168.1.37}"
+MQTT_PORT="${MQTT_PORT:-1883}"
+MQTT_TOPIC="${MQTT_TOPIC:-homeassistant}"
+MQTT_DEVICENAME="${MQTT_DEVICENAME:-voltronic}"
+MQTT_USERNAME="${MQTT_USERNAME:-}"
+MQTT_PASSWORD="${MQTT_PASSWORD:-}"
 
 echo "Configuration:"
 echo "  Device: $INVERTER_DEVICE"
 echo "  Force Discovery: $FORCE_DISCOVERY"
 echo "  Skip Discovery: $SKIP_DISCOVERY"
+echo "  MQTT Server: $MQTT_SERVER:$MQTT_PORT"
+echo "  MQTT Topic: $MQTT_TOPIC"
+echo "  MQTT Device: $MQTT_DEVICENAME"
 echo ""
 
+# Function to update MQTT configuration
+update_mqtt_config() {
+    local mqtt_conf="/etc/inverter/mqtt.json"
+    echo "Updating MQTT configuration from environment variables..."
+    
+    # Backup original
+    cp $mqtt_conf ${mqtt_conf}.backup
+    
+    # Update MQTT settings using jq
+    jq --arg server "$MQTT_SERVER" \
+       --arg port "$MQTT_PORT" \
+       --arg topic "$MQTT_TOPIC" \
+       --arg devicename "$MQTT_DEVICENAME" \
+       --arg username "$MQTT_USERNAME" \
+       --arg password "$MQTT_PASSWORD" \
+       '.server = $server | .port = $port | .topic = $topic | .devicename = $devicename | .username = $username | .password = $password' \
+       $mqtt_conf > ${mqtt_conf}.tmp && mv ${mqtt_conf}.tmp $mqtt_conf
+    
+    echo "✓ MQTT configuration updated"
+    echo "  Server: $MQTT_SERVER:$MQTT_PORT"
+    echo "  Topic: $MQTT_TOPIC/sensor/$MQTT_DEVICENAME"
+    [ ! -z "$MQTT_USERNAME" ] && echo "  Auth: Enabled (username: $MQTT_USERNAME)"
+    echo ""
+}
+
+# Update MQTT config from ENV on startup
+update_mqtt_config
+
 # Function to update config file with discovered values
 update_config_with_discovery() {
     local qmod=$1