proj-1's docker error

[crownz-sec]

I use docker for proj-1. After running docker build -t deet ., I use command ./container cargo build. This will cause the following error:

Updating crates.io index
error: failed to get `addr2line` as a dependency of package `deet v0.1.0 (/deet)`

Caused by:
  failed to load source for dependency `addr2line`

Caused by:
  Unable to update registry `https://github.com/rust-lang/crates.io-index`

Caused by:
  failed to fetch `https://github.com/rust-lang/crates.io-index`

Caused by:
  error reading from the zlib stream; class=Zlib (5)

And I fixed it by install git comman for the docker.