raspi | Raspberry Pi hacking

I am fairly very new to Ubuntu/Linux and am currently running into an issue with getting an ERROR: Unknown command not found. I am trying configure Qt for cross compilation for a raspberry pi. I have looked up for similar issues but to no avail unfortunately.

The code I am running is as follows

I'm trying to clone a repo from Gitlab.com via ssh. But I get this error all the time:

I’m doing a home project with a raspi and a rain sensor.

Basically, with cronjobs, i run isitraining.py every 30 min.

If it is raining, i want it to increment a specific variable from another module (rains.water)

If it stops raining, i want it to decrease the same variable.

here are my codes:

rains.py

My web-application consists of a vue frontend (purely client-side), a .NET backend and a postgres db. For hosting I'm using docker and docker-compose (my first time).

The setup consists of 4 containers.

• postgres db
• .net backend
• vue frontend (not running, just the built files)
• nginx instance

The nginx container serves as a reverse proxy for my backend and serves the static files for the frontend. I'm using only one container for both since I'm planning on hosting on a raspberry pi with limited resources and I also wanted to avoid coupling vue and nginx.

In order to achieve this, I'm mounting a named volume frontend-volume to read the frontend files from which previously is mounted to the static files built by the frontend image. I have copied (hopefully all) the relevant parts of the docker-compose file and the frontend dockerfile below. The full files are on GitHub:

• docker-compose.yml
• frontend/Dockerfile

Now my setup works fine initially but when I want to update some frontend-code, it just won't apply these changes in the container since the volume that contains the frontend files already exists and contains data (my assumption). I've tried docker-compose up --build and docker-compose up --build --force-recreate. Building manually with docker-compose build --no-cache frontend and then docker-compose up --force-recreate doesn't work either.
I had hoped these old files would just be overridden but apparently that's not the case. The only way I found to get the frontend to update correctly is to delete the volumes with docker-compose down -v and then running the up command again. Since I also have a volume for my database, this isn't a feasible solution unfortunately.

My goal was to have a setup that enables me to do a git pull on the raspi followed by a docker-compose up --build to update all the containers to the newest state while retaining the volumes containing the database-data. But that in itself might be wrong, I just want something comparable.

So my question: How can I create a file-only container for the frontend without having my files "frozen"?

Alternatively: what's the correct way of doing this (is it just wrong on every level)?

Dockerfile:

Greetings Stack Overflow,

I have a RespberryPi4B, on which I installed Ubuntu 20. (Linux ubuntu 5.4.0-1034-raspi aarch64 - Ubuntu 20.04.1 LTS)

On this Pi I want to install several Applications for my local use only. To be able to have multiple Applications exposed, I use Traefik as a Proxy. To easier deploy the Applications, I use Docker and Docker-Compose

Already up and running I have a Nextcloud instance, which works just fine. Now I want to add FireflyIII as an Application, but the routing does not comply, and greets me with "Bad Gateway".

Here's what I have

The following docker-compose.yml for my Nextcloud works like a charm:

I'm trying to use an example from https://github.com/ageitgey/face_recognition

for face detection on Raspberry Pi.

This is the 'facerec_on_raspberry_pi.py' code:

I have followed a lot of tutorial and blog these days to create a VPN Service with wireguard on my raspi. Everything works fine but I am unsure if my connection is encrypted correctly.

I have followed this link https://nickb.dev/blog/viewing-wireguard-traffic-with-tcpdump to check if the everything works.

In the last step, to check if the connection is encrypted I have done tcpdump -n -X -i eth0 host 100.100.100.100 and in the link above you can see that the first row should start with 0400 0000.

This should come out correct output

But this is my output and I don't know if this is correctly. I mean it's seems to be encrypted right?

Any help is appreciated, thank you.

I'm trying to set up a RTSP server for my camera on my Raspberry Pi 4B. I installed GStreamer and libgstrtspserver-1.0-dev (version 1.14.4), and am using the test-launch.c script, compiled with gcc test-launch.c -o test-launch $(pkg-config --cflags --libs gstreamer-1.0 gstreamer-rtsp-server-1.0)

I then try to use the pipeline

here is my problem ;( i use ist with my raspi pi pip

ive this version installed of pip

" pip 18.1 from /usr/lib/python2.7/dist-packages/pip (python 2.7) "