[Perf] Reduce Docker image size

[Jerboas86]

The docker image size is currently 683MB and based on bookworm-slim.

The binary requires heavy data files like onnx file, but there's still room for improvement.

I tried to use alpine base image without success. The rust compilation fails being unable to find libclang.so file.

[lucasjinreal]

Does onnx file able to download on the fly as doing by default in current code base?

[Jerboas86]

The onnx file is incorporated in the docker image.

COPY --from=builderpy /kokoro-v0_19.onnx ./checkpoints/kokoro-v0_19.onnx

If you try to remove this line, the container execution will fail with the following error

thread 'main' panicked at src/tts/koko.rs:32:18:
download model failed.: reqwest::Error { kind: Request, url: "https://huggingface.co/hexgrad/kLegacy/resolve/main/v0.19/kokoro-v0_19.onnx", source: hyper_util::client::legacy::Error(Connect, Ssl(Error { code: ErrorCode(1), cause: Some(Ssl(ErrorStack([Error { code: 369098857, library: "STORE routines", function: "ossl_store_get0_loader_int", reason: "unregistered scheme", file: "../crypto/store/store_register.c", line: 237, data: "scheme=file" }, Error { code: 2147483650, library: "system library", function: "file_open", file: "../providers/implementations/storemgmt/file_store.c", line: 267, data: "calling stat(/usr/lib/ssl/certs)" }, Error { code: 369098857, library: "STORE routines", function: "ossl_store_get0_loader_int", reason: "unregistered scheme", file: "../crypto/store/store_register.c", line: 237, data: "scheme=file" }, Error { code: 2147483650, library: "system library", function: "file_open", file: "../providers/implementations/storemgmt/file_store.c", line: 267, data: "calling stat(/usr/lib/ssl/certs)" }, Error { code: 369098857, library: "STORE routines", function: "ossl_store_get0_loader_int", reason: "unregistered scheme", file: "../crypto/store/store_register.c", line: 237, data: "scheme=file" }, Error { code: 2147483650, library: "system library", function: "file_open", file: "../providers/implementations/storemgmt/file_store.c", line: 267, data: "calling stat(/usr/lib/ssl/certs)" }, Error { code: 369098857, library: "STORE routines", function: "ossl_store_get0_loader_int", reason: "unregistered scheme", file: "../crypto/store/store_register.c", line: 237, data: "scheme=file" }, Error { code: 2147483650, library: "system library", function: "file_open", file: "../providers/implementations/storemgmt/file_store.c", line: 267, data: "calling stat(/usr/lib/ssl/certs)" }, Error { code: 369098857, library: "STORE routines", function: "ossl_store_get0_loader_int", reason: "unregistered scheme", file: "../crypto/store/store_register.c", line: 237, data: "scheme=file" }, Error { code: 2147483650, library: "system library", function: "file_open", file: "../providers/implementations/storemgmt/file_store.c", line: 267, data: "calling stat(/usr/lib/ssl/certs)" }, Error { code: 167772294, library: "SSL routines", function: "tls_post_process_server_certificate", reason: "certificate verify failed", file: "../ssl/statem/statem_clnt.c", line: 1889 }]))) }, X509VerifyResult { code: 20, error: "unable to get local issuer certificate" })) }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace