`CROSS_CONTAINER_OPTS` is also used for `docker exec` when using `CROSS_REMOTE`

Checklist

[X] I've looked through the issues and pull requests for similar reports

Describe your issue

According to the wiki CROSS_CONTAINER_OPTS should only be added $engine run commands:

CROSS_CONTAINER_OPTS: Additional arguments to provide to the container engine during $engine run (example: --env MYVAR=1 where engine=docker).

However when using CROSS_REMOTE the options are also added to a $engine exec command.

This is problematic when the options only can be used with $engine run. For instance I would like to use docker run --net=host when building.

Possible solutions:

CROSS_CONTAINER_OPTS should only apply to $engine run commands as currently documented in the wiki.
CROSS_CONTAINER_OPTS should apply to both $engine run and $engine exec. The wiki should be updated to reflect this. Furthermore a CROSS_CONTAINER_RUN_OPTS environment variable should be supported that only gets passed to $engine run.

What target(s) are you cross-compiling for?

No response

Which operating system is the host (e.g computer cross is on) running?

[ ] macOS
[ ] Windows
[X] Linux / BSD
[ ] other OS (specify in description)

What architecture is the host?

[X] x86_64 / AMD64
[ ] arm32
[ ] arm64 (including Mac M1)

What container engine is cross using?

[X] docker
[ ] podman
[ ] other container engine (specify in description)

cross version

cross 0.2.5

Example

$ docker run -v /var/run/docker.sock:/var/run/docker.sock --rm -it rust:1.71.0
# apt-get update
# apt-get install -y docker.io
# cargo install cross
# cargo new hello-world
# cd hello-world
# CROSS_REMOTE=1 CROSS_CONTAINER_OPTS="--net=host" cross --verbose build --target x86_64-unknown-linux-gnu
+ cargo metadata --format-version 1 --filter-platform x86_64-unknown-linux-gnu
+ rustc --print sysroot
+ rustup toolchain list
+ rustup target list --toolchain 1.71.0-x86_64-unknown-linux-gnu
+ rustup component list --toolchain 1.71.0-x86_64-unknown-linux-gnu
+ rustup --verbose component add rust-src --toolchain 1.71.0-x86_64-unknown-linux-gnu
verbose: read metadata version: '12'
info: downloading component 'rust-src'
verbose: downloading file from: 'https://static.rust-lang.org/dist/2023-07-13/rust-src-1.71.0.tar.xz'
verbose: downloading with reqwest
verbose: checksum passed
info: installing component 'rust-src'
verbose: creating temp directory: /usr/local/rustup/tmp/tqr4atokf5zp5xd6_dir
verbose: creating temp file: /usr/local/rustup/tmp/mau15vxbr7jwiw53_file
verbose: creating temp file: /usr/local/rustup/tmp/ue4512m70ntmoo28_file
verbose: deleted temp directory: /usr/local/rustup/tmp/tqr4atokf5zp5xd6_dir
verbose: creating temp file: /usr/local/rustup/tmp/vlelm8n4yw84szpz_file
verbose: creating temp file: /usr/local/rustup/tmp/u9vmt5hs9dyhe6j__file
verbose: deleted temp file: /usr/local/rustup/tmp/mau15vxbr7jwiw53_file
verbose: deleted temp file: /usr/local/rustup/tmp/ue4512m70ntmoo28_file
verbose: deleted temp file: /usr/local/rustup/tmp/vlelm8n4yw84szpz_file
verbose: deleted temp file: /usr/local/rustup/tmp/u9vmt5hs9dyhe6j__file
+ /usr/bin/docker
+ /usr/bin/docker volume inspect cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2
+ /usr/bin/docker ps -a --filter 'name=cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3' --format {{.State}}
+ /usr/bin/docker run --userns host --name cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 --rm -v /cross -v /cross/cargo/bin -d -t ghcr.io/cross-rs/x86_64-unknown-linux-gnu:0.2.5
Unable to find image 'ghcr.io/cross-rs/x86_64-unknown-linux-gnu:0.2.5' locally
0.2.5: Pulling from cross-rs/x86_64-unknown-linux-gnu
58690f9b18fc: Pull complete 
b51569e7c507: Pull complete 
da8ef40b9eca: Pull complete 
fb15d46c38dc: Pull complete 
7cd0932c59ac: Pull complete 
b8099f45b9a5: Pull complete 
640227c3e7fb: Pull complete 
feac1a957a2e: Pull complete 
2bb7cc963f55: Pull complete 
69f3cca19ad2: Pull complete 
9eae8e6ab0e2: Pull complete 
f6948013d489: Pull complete 
e63c3aabe8fe: Pull complete 
f3f8758fddaa: Pull complete 
e8df8713a13e: Pull complete 
840b2ff81099: Pull complete 
e52d8b455ef1: Pull complete 
Digest: sha256:9e5b39c09874bc1816c675ed11afca2c2ed6cee0c4ed2b3c1d5763c346c9ae3f
Status: Downloaded newer image for ghcr.io/cross-rs/x86_64-unknown-linux-gnu:0.2.5
6dc7015e7128bd2bd1fcfd9c5f4d61e9b7326eacddc4ddcde6505570a11c3b79
+ /usr/bin/docker exec cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 sh -c 'mkdir -p '\''/cross/cargo'\'''
+ /usr/bin/docker cp -a /usr/local/cargo/bin cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/cargo
+ /usr/bin/docker cp -a /usr/local/cargo/env cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/cargo
+ /usr/bin/docker exec cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 sh -c 'mkdir -p '\''/cross/rust/lib/rustlib'\'''
+ /usr/bin/docker cp -a /usr/local/rustup/toolchains/1.71.0-x86_64-unknown-linux-gnu/bin cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust
+ /usr/bin/docker cp -a /usr/local/rustup/toolchains/1.71.0-x86_64-unknown-linux-gnu/libexec cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust
+ /usr/bin/docker cp -a /usr/local/rustup/toolchains/1.71.0-x86_64-unknown-linux-gnu/etc cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust
lstat /usr/local/rustup/toolchains/1.71.0-x86_64-unknown-linux-gnu/etc: no such file or directory
+ /usr/bin/docker cp -a /root/.local/share/cross-rs/tmp/.tmp1769Yj/lib cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust
+ /usr/bin/docker cp -a /root/.local/share/cross-rs/tmp/.tmpPNauRc/lib cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust
+ /usr/bin/docker cp -a /usr/local/rustup/toolchains/1.71.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/rust/lib/rustlib
+ /usr/bin/docker cp -a /root/.local/share/cross-rs/tmp/.tmpYZ3vcP cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3:/cross/project
+ /usr/bin/docker exec cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 sh -c 'set -e pipefail
set -x
chown -R 0:0 /cross
prefix="/cross"

symlink_recurse() {
    for f in "${1}"/*; do
        dst=${f#"$prefix"}
        if [ -f "${dst}" ]; then
            echo "invalid: got unexpected file at ${dst}" 1>&2
            exit 1
        elif [ -d "${dst}" ]; then
            symlink_recurse "${f}"
        else
            ln -s "${f}" "${dst}"
        fi
    done
}

symlink_recurse "${prefix}"
'
+ chown -R 0:0 /cross
+ prefix=/cross
+ symlink_recurse /cross
+ dst=/cargo
+ [ -f /cargo ]
+ [ -d /cargo ]
+ ln -s /cross/cargo /cargo
+ dst=/project
+ [ -f /project ]
+ [ -d /project ]
+ ln -s /cross/project /project
+ dst=/rust
+ [ -f /rust ]
+ [ -d /rust ]
+ ln -s /cross/rust /rust
+ /usr/bin/docker exec --user 0:0 -e 'PKG_CONFIG_ALLOW_CROSS=1' -e 'XARGO_HOME=/xargo' -e 'CARGO_HOME=/cargo' -e 'CARGO_TARGET_DIR=/target' -e 'CROSS_RUNNER=' -e TERM -e 'USER=root' '--net=host' -w /project cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 sh -c 'PATH=$PATH:/rust/bin cargo --verbose build --target x86_64-unknown-linux-gnu --target-dir /cross/project/target'
unknown flag: --net
See 'docker exec --help'.
+ /usr/bin/docker exec cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 bash -c '[[ -d '\''/cross/project/target'\'' ]]'
+ /usr/bin/docker stop cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3 --time 2
cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3
+ /usr/bin/docker rm cross-1.71.0-x86_64-unknown-linux-gnu-3625a-8ede3aae2-x86_64-unknown-linux-gnu-hello-world-dd5f3
+ rustup component list --toolchain 1.71.0-x86_64-unknown-linux-gnu

Additional information / notes