Add write permission to docker open-issue #462

Job	Run time
start_tsp	22s
Rust Daily Test / vars	3s
Rust CI Test / vars	4s
Rust Daily Test / cargo-check	47s
Rust Daily Test / cargo-check (stable, wasm32-unknown-unknown)	46s
Rust Daily Test / cargo-check (beta)	1m 0s
Rust CI Test / coverage	52s
Rust CI Test / Clippy	30s
Rust CI Test / format	18s
Rust CI Test / cargo-test (stable, wasm32-unknown-unknown, true)	30s
Rust CI Test / cargo-test (beta, true)	45s
Rust CI Test / cargo-test (false)	31s
	6m 28s

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