Build Docker Image Failed

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## detail | 详细描述
Hi there,
Try to build the docker as refer to the guid, but always failed with the same messages as below, any clue to fix it? Thanks!

Step 7/7 : RUN PATH=$HOME/.cargo/bin:${PATH} && cargo build && cd flow-python && python3 setup.py install --user && cd examples && cargo run --example run_with_plugins -- -p logical_test
---> Running in 9e5d7d0b6e8c
Updating crates.io index
Updating git repository `https://github.com/nbdd0121/stackful.git`
Updating git repository `https://github.com/Easonzero/rust-ffmpeg`
Updating git repository `https://github.com/Easonzero/rust-ffmpeg-sys`
Downloading crates ...

... ... [**Omitt dozens of lines**]

Downloaded clang-sys v0.29.3
Downloaded h2 v0.3.3
warning: spurious network error (2 tries remaining): [28] Timeout was reached (download of `ndarray v0.15.3` failed to transfer more than 10 bytes in 30s)
warning: spurious network error (2 tries remaining): [28] Timeout was reached (failed to download any data for `libc v0.2.100` within 30s)
error: failed to download from `https://crates.io/api/v1/crates/num-integer/0.1.44/download`

Caused by:
[92] Stream error in the HTTP/2 framing layer (HTTP/2 stream 279 was not closed cleanly before end of the underlying stream)
The command '/bin/sh -c PATH=$HOME/.cargo/bin:${PATH} && cargo build && cd flow-python && python3 setup.py install --user && cd examples && cargo run --example run_with_plugins -- -p logical_test' returned a non-zero code: 101

Start by rerunning the Docker build and inspecting the cargo build step in the reported command, especially the crates.io download failures and HTTP/2 stream error. The work is done when the image build completes through setup.py install and the example cargo run command without the dependency download failure.

Written by the indexing model from the issue text.