HOW to create a dockerfile for YTuner and Raspi

[qsm101]

Hi all,
I am still struggeling - even with all the hints to create a dockerfile to run YTuner with Raspi.
Appreciate more details from the audience.

BR and thanks
Juergen

[Larsvb0]

follow this and tell us when it fails:

YTuner in Docker container

If you can't live without containers and you think that every day without creating a new container is a wasted day, you can also run YTuner in a container.

Assumptions

In my opinion, there is no point in placing cache, config and db with the contents in the container and we should use CacheFolderLocation, ConfigFolderLocation and DBFolderLocation options of ytuner.ini file and point to host resources to remain persistent.
Therefore, in this short description I'll focus on this scenario, but of course everyone can choose their own.

Tip: In the description below, I'll use Ubuntu 22.04 LTS as a host, x86_64-linux YTuner binaries and Alpine Linux Docker image to make my container as small as possible.

If you are familiar with building Docker containers, you may want to skip reading further. If not, don't worry and read on.

That's easy

1) Install Docker

Use a well-documented procedure: https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository

2) Prepare YTuner binaries and configuration

First, let's prepare some host shared volume (i.e. ~/YTuner) and copy your YTuner's config and my_station.ini/yaml files.

ladm@localubuntu20:~$ mkdir YTuner && cd YTuner && mkdir config
ladm@localubuntu20:~/YTuner$ 

Now, let's prepare YTuner-docker directory :

ladm@localubuntu20:~$ mkdir YTuner-docker && cd YTuner-docker
ladm@localubuntu20:~/YTuner-docker$ 

Get YTuner binaries :

ladm@localubuntu20:~/YTuner-docker$ wget https://github.com/coffeegreg/YTuner/releases/download/1.2.2/ytuner-1.2.2-x86_64-linux.zip

or build your own from source.

Extract ytuner and ytuner.ini files only :

ladm@localubuntu20:~/YTuner-docker$ unzip -d x86_64-linux/ ytuner-1.2.2-x86_64-linux.zip ytuner ytuner.ini

Make ytuner executable :

ladm@localubuntu20:~/YTuner-docker$ sudo chmod +x x86_64-linux/ytuner

Edit and change the ytuner.ini file as you wish, but remember to set the following options :

CacheFolderLocation=/app/host-shared
ConfigFolderLocation=/app/host-shared
DBFolderLocation=/app/host-shared

Now prepare the following Dockerfile :

# Start with the Alpine 3.19 Docker image.
FROM alpine:3.19

# Install libc6-compat, required for executables generated by FPC.
RUN apk --no-cache add libc6-compat
# Install sqlite-libs to support [catDB,catMemDB,catPermMemDB] cache types.
RUN apk --no-cache add sqlite-libs

# Set working directory in the container image.
WORKDIR /app

# Copy the YTuner files from host into container image.
COPY x86_64-linux/ /app/
 
# Make the TCP/UDP ports to outside the container.
EXPOSE 80/tcp
EXPOSE 53/udp

# Run YTuner.
CMD ["./ytuner"]

3) Building Docker container

Now you are ready to build your Docker container with YTuner binaries :

ladm@localubuntu20:~/YTuner-docker$ sudo docker build -t ytuner:1.2.2 .
+] Building 0.7s (10/10) FINISHED                                                                                                   docker:default
 => [internal] load build definition from Dockerfile                                                                                           0.0s
 => => transferring dockerfile: 674B                                                                                                           0.0s
 => [internal] load metadata for docker.io/library/alpine:3.19                                                                                 0.5s
 => [internal] load .dockerignore                                                                                                              0.0s
 => => transferring context: 2B                                                                                                                0.0s
 => [1/5] FROM docker.io/library/alpine:3.19@sha256:51b67269f354137895d43f3b3d810bfacd3945438e94dc5ac55fdac340352f48                           0.0s
 => [internal] load build context                                                                                                              0.0s
 => => transferring context: 118B                                                                                                              0.0s
 => CACHED [2/5] RUN apk --no-cache add libc6-compat                                                                                           0.0s
 => CACHED [3/5] RUN apk --no-cache add sqlite-libs                                                                                            0.0s
 => CACHED [4/5] WORKDIR /app                                                                                                                  0.0s
 => CACHED [5/5] COPY x86_64-linux/ /app/                                                                                                      0.0s
 => exporting to image                                                                                                                         0.0s
 => => exporting layers                                                                                                                        0.0s
 => => writing image sha256:0f5a6853d85c813d2351ff27199b2576b619d63863eb4020fa4e08feaf22f7e6                                                   0.0s
 => => naming to docker.io/library/ytuner:1.2.2                                                                                                0.0s

Tip: 1.2.2 is a version related tag. You can use other values.

Congratulations, your YTuner Docker container has been built. You can see it :

ladm@localubuntu20:~/YTuner-docker$ sudo docker images
REPOSITORY    TAG       IMAGE ID       CREATED          SIZE
ytuner        1.2.2     0f5a6853d85c   26 seconds ago   11.4MB

4) Running YTuner in Docker container

Now, you're ready to go:

ladm@localubuntu20:~/YTuner-docker$ sudo docker run --rm --network host -v ~/YTuner:/app/host-shared ytuner:1.2.2
YTuner v1.2.2 Copyright (c) 2024 Greg P. (https://github.com/coffeegreg)
24-1-24 22:20:47 : Inf : Starting services...
24-1-24 22:20:47 : Inf : Successfully loaded 10 my stations.
24-1-24 22:20:47 : Dbg : Database library : 3.44.2.
24-1-24 22:20:47 : Inf : Checking local database.
24-1-24 22:20:47 : Inf : Preparing local database This may take a while...
24-1-24 22:20:47 : Dbg : Creating tables.
24-1-24 22:20:47 : Dbg : Filling out countries table.
24-1-24 22:20:47 : Dbg : Radio-browser.info: GET countries.
24-1-24 22:20:48 : Dbg : Filling out languages table.
24-1-24 22:20:48 : Dbg : Radio-browser.info: GET languages.
24-1-24 22:20:48 : Dbg : Filling out codecs table.
24-1-24 22:20:48 : Dbg : Radio-browser.info: GET codecs.
24-1-24 22:20:48 : Dbg : Filling out tags table.
24-1-24 22:20:48 : Dbg : Radio-browser.info: GET tags.
24-1-24 22:20:49 : Dbg : Creating indexes.
24-1-24 22:20:49 : Dbg : Filling out stations table.
24-1-24 22:20:49 : Dbg : Radio-browser.info: GET stations.
24-1-24 22:21:54 : Dbg : Cleaning tables.
24-1-24 22:22:19 : Dbg : Rebuilding indexes.
24-1-24 22:22:20 : Inf : Local database is ready.
24-1-24 22:22:20 : Inf : DNS Service: listening on: 192.168.1.140:53.
24-1-24 22:22:20 : Inf : Web Service: listening on: 192.168.1.140:80.

If you stop running YTuner container and start it again YTuner will use database or cache files already stored on host shared volume.

ladm@localubuntu20:~/YTuner-docker$ sudo docker run --rm --network host -v ~/YTuner:/app/host-shared ytuner:1.2.2
YTuner v1.2.2 Copyright (c) 2024 Greg P. (https://github.com/coffeegreg)
24-1-24 22:17:38 : Inf : Starting services...
24-1-24 22:17:38 : Inf : Successfully loaded 10 my stations.
24-1-24 22:17:38 : Dbg : Database library : 3.44.2.
24-1-24 22:17:38 : Inf : Checking local database.
24-1-24 22:17:38 : Inf : Local database is ready.
24-1-24 22:17:38 : Inf : DNS Service: listening on: 192.168.1.140:53.
24-1-24 22:17:38 : Inf : Web Service: listening on: 192.168.1.140:80.

That's it. Easy, right?

Summary

This is, of course, a simplified description and you can change the container configuration according to your needs.
Use the docker documentation to learn more (https://docs.docker.com).

If you found any errors or inaccuracies in this description, please let me know.

[coffeegreg]

Hi Juergen
Start by installing docker, follow this procedure : https://docs.docker.com/engine/install/raspberry-pi-os/
Then follow the tutorial : DOCKER.md (The same one that Larsvb0 mentioned).
Pay attention to the Dockerfile :

# Start with the Alpine 3.19 Docker image.
FROM alpine:3.19

If you do not want to build a container based on Alpine Linux, choose another one that suits your needs.
Remember that Alpine Linux (or any musl libc systems) will need :

# Install libc6-compat, required for executables generated by FPC.
RUN apk --no-cache add libc6-compat

Just follow the tutorial and everything should be fine ... 👍

If you have any problems, write specifically what they are related to. Add logs/console dumps and we'll see how we can help you.

[qsm101]

Coffeegreg,
thanks for your answer.
I tried again your proposal. after executing:
sudo docker run --rm --network host -v ~/YTuner:/app/host-shared ytuner:1.2.2
I get:
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "./ytuner": permission denied: unknown.

sudo docker images
shows me, that I have an ytuner image created.

What is my error?

BR
Juergen

[TheBossME]

chmod +x ytuner

[qsm101]

Hi TheBossME,

I did that already earlier. See here please:
pi@BPI181:~/YTuner-docker$ ls -l x86_64-linux/
total 2352
-rwxrwxrwx 1 pi pi 2395240 24. Jan 2024 ytuner
-rw-r--r-- 1 pi pi 9828 22. Jan 2024 ytuner.ini

But error remains when exectuing the sudo docker run command:
docker: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: exec: "./ytuner": permission denied: unknown.

I am still think, that the problem is because I am running on a raspi.

[qsm101]

hi TheBossME,
no worries, I am not angry with you. I am aware to miss quite a lot knowledge on linux and docker.

I am using a Bananapi M2U / Berry.
Earlier, I was able to run: mpvd/vtuner-emulator-ycast on docker before trying on coffeegrep version of ytuner.

Port 80 is working and after removing and move back the the power cable of my RX-V500D, i can hear music. The version I used
was on a cmd line ytuner-1.2.3-arm-linux-rpi. The key enabler was the sudo before the ./ytuner.
So step 1 is done.
Now let me see, if it works with ytuner-1.2.4-armhf-linux.

[coffeegreg]

i can hear music

Great ! 👍

The key enabler was the sudo before the ./ytuner

👍

Now let me see, if it works with ytuner-1.2.4-armhf-linux.

ytuner-1.2.4-armhf-linux has been build based on the same RPi libraries as previous versions.
I removed the -rpi postfix and changed name because I thought everyone would know that for a 32bit RPi, armhf would be the right choice. 🤔 I think I should add the same file to Release but with -rpi postfix in the name. 🤔

[qsm101]

I can confirm, 1.2.4 with armhf-linux is of course working. the idea with the postfix I like. Easier for those with less experience. Thx for your addtional patience.
No worries, I did not take me that many hours. I just made a break to do some weekend shopping.
Now let me see, if I can do that with docker as well.

[coffeegreg]

.... after removing and move back the the power cable of my RX-V500D, i can hear music.

@qsm101
May I add your RX-V500D to the "Confirmed working" list? 🤔

[qsm101]

of course. Please do so.