ci: add vulkan docker image (#3644)

Signed-off-by: rare-magma <rare-magma@posteo.eu>

README.md

@@ -443,11 +443,12 @@ ffmpeg -i samples/jfk.wav jfk.opus
 
 ### Images
 
-We have two Docker images available for this project:
+We have multiple Docker images available for this project:
 
 1. `ghcr.io/ggml-org/whisper.cpp:main`: This image includes the main executable file as well as `curl` and `ffmpeg`. (platforms: `linux/amd64`, `linux/arm64`)
 2. `ghcr.io/ggml-org/whisper.cpp:main-cuda`: Same as `main` but compiled with CUDA support. (platforms: `linux/amd64`)
 3. `ghcr.io/ggml-org/whisper.cpp:main-musa`: Same as `main` but compiled with MUSA support. (platforms: `linux/amd64`)
+4. `ghcr.io/ggml-org/whisper.cpp:main-vulkan`: Same as `main` but compiled with Vulkan support. (platforms: `linux/amd64`)
 
 ### Usage
 
@@ -456,15 +457,27 @@ We have two Docker images available for this project:
 docker run -it --rm \
   -v path/to/models:/models \
   whisper.cpp:main "./models/download-ggml-model.sh base /models"
+
 # transcribe an audio file
 docker run -it --rm \
   -v path/to/models:/models \
   -v path/to/audios:/audios \
   whisper.cpp:main "whisper-cli -m /models/ggml-base.bin -f /audios/jfk.wav"
+
 # transcribe an audio file in samples folder
 docker run -it --rm \
   -v path/to/models:/models \
   whisper.cpp:main "whisper-cli -m /models/ggml-base.bin -f ./samples/jfk.wav"
+
+# run the web server
+docker run -it --rm -p "8080:8080" \
+  -v path/to/models:/models \
+  whisper.cpp:main "whisper-server --host 127.0.0.1 -m /models/ggml-base.bin"
+  
+# run the bench too on the small.en model using 4 threads
+docker run -it --rm \
+  -v path/to/models:/models \
+  whisper.cpp:main "whisper-bench -m /models/ggml-small.en.bin -t 4"
 ```
 
 ## Installing with Conan