Some small improvements in README.md

.env

@@ -9,7 +9,7 @@ OPENDTU_ADDR=<ADDRESS OF OPENDTU>   # address of opendtu (format: http(s)://<IP-
 OPENDTU_USER=<OPENDTU USER>         # username for opendtu auth
 OPENDTU_PWD=<OPENDTU PWD>           # password for opendtu auth
 OPENDTU_INVERTER_SN=<SERIAL NR>     # serial number of the inverter to control
-LIMIT_CORRECTION_FACTOR=2           # correction factor for limit setting (e.g.: when only 2 strings of 4 are connected, you always need to set 2x the power), default: 2
+LIMIT_CORRECTION_FACTOR=2           # correction factor for limit setting (e.g.: when only 2 strings of 4 are connected, you always need to set 2x the power), default: 1.0
 LIMIT_UPDATE_INTERVAL=5             # interval in which the limit shall be updated, default: 5 [sec]
 DRY_RUN=0                           # if the limit shall be set or not; default: 1 (0: False, 1: True)
 POWER_TARGET=15                     # the target power consumption of the house, default: 50 [Watts]

Dockerfile

@@ -0,0 +1,8 @@
+FROM python:3.13-slim
+RUN useradd --create-home --shell /bin/bash solarcontrol
+WORKDIR /script
+COPY solarcontrol.py ./
+RUN pip install --upgrade pip
+USER solarcontrol
+RUN pip install --user --no-cache-dir paho-mqtt python-dotenv requests
+CMD ["python", "solarcontrol.py"]

README.md

@@ -5,6 +5,20 @@ Enforce a zero export (or whatever consumption you like) policy with an OpenDTU-
 
 ## Configuring and usage
 
+
+### docker-compose
+
+To run it using docker, try the `docker-compose.yaml` file present in this repository. You will need the .env file too for that reasons, so the easiest thing is to just run the following commands:
+
+```bash
+git clone https://git.privacynerd.de/BlueFox/SolarControl.git && cd SolarControl
+vi .env  # adjust the script to your needs
+docker-compose up -d && docker-compose logs -f
+```
+
+
+### barebone
+
 The script can be configured using the .env file where you can adjust it (hopefully perfect) to your needs. After that, just run the script:
 
 ```bash
@@ -14,6 +28,23 @@ python3 lge320reader.py
 Please note: the .env file needs to be in the same folder or any other folder higher up in the directory structure as the script (more specifically, the WORKDIR). It is just a help, actually, the script searches for specific variables in its environment variables. It only loads the .env file so that you do not need to `export` all the files before running (see https://pypi.org/project/python-dotenv/ for more details). This also means that when using it in docker, you can set the docker containers environment file to that .env file and it will be accepted too.
 
 
+## Updating
+
+To update, simply use `git pull` to pull the latest changes. Afterwards, you need to restart your script (with docker, just use `docker-compose up -d --force-recreate`).
+
+
+## Building the docker image
+
+To build the image for docker, simply use the following commands:
+
+```bash
+docker login  # login to docker hub
+docker buildx create --name buildx-multi-arch
+docker buildx use buildx-multi-arch
+docker buildx build --no-cache --platform linux/amd64,linux/386,linux/arm/v5,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x -t bluefox42/solarcontrol:<VERSION> -t bluefox42/solarcontrol:latest . --push
+```
+
+
 ## License
 
 This project is licensed under the terms of the GNU General Public License v3.0 or later, see [COPYING](COPYING).

docker-compose.yaml

@@ -0,0 +1,8 @@
+services:
+  solarcontrol:
+    image: bluefox42/solarcontrol:latest
+    hostname: solarcontrol
+    container_name: solarcontrol
+    env_file: ".env"
+    restart: unless-stopped
+    stop_grace_period: 15s

solarcontrol.py

@@ -61,7 +61,7 @@ powers = {"total": None, "total_house": None, "total_solar": None, "timestamp":
 
 # define mqtt callbacks
 def on_connect(client, userdata, flags, reason_code, properties):
-    print(f"{bcolors.OKGREEN}Connected with result code {bcolors.ENDC}{reason_code}")
+    print(f"{bcolors.OKGREEN}Connected to the MQTT broker ({mq_broker}:{mq_port}) with result code {bcolors.ENDC}{reason_code}{bcolors.OKGREEN}.{bcolors.ENDC}")
     client.subscribe("lge320/#")
     client.subscribe("solar/ac/#")
 def on_message(client, userdata, msg):
@@ -83,6 +83,7 @@ mqttc.connect(mq_broker, mq_port, 60)
 
 mqttc.loop_start()
 
+
 def threaded_current_power_calculation():
     while True:
         last_powers = powers_raw.copy()