复制失败 '/target/x86_64-unknown-linux-musl/release/microservice_app： 没有这样的文件或目录' Rust Dockerfile

Question

我正在尝试运行这个Docker镜像，我是Docker世界的新手。感谢帮助：(我正在尝试在谷歌云上使用Docker使用postgres运行一个简单的Rust微服务。但是在构建完成后，就不能复制二进制文件了

Cargo.toml:

[package]
name = "home_made_rust"
version = "0.1.0"
edition = "2018"

[dependencies]
postgres = "0.17.5"

下面是我的Dockerfile

# ------------------------------------------------------------------------------
# Cargo Build Stage
# ------------------------------------------------------------------------------
FROM rust:latest as builder
WORKDIR     /rust
# Download the cargo target
RUN         rustup target add x86_64-unknown-linux-musl
# create dummy application, s.t. cargo can download all dependencies
RUN         mkdir -p /rust/app/src && echo 'fn main(){}' > app/src/main.rs
WORKDIR     /rust/app
# Build & cache dependencies
COPY        Cargo.toml Cargo.lock ./
RUN         cargo build --release --target x86_64-unknown-linux-musl
# Copy application code
COPY        src ./src
# Build production binary
RUN         touch src/main.rs && cargo build --release --target x86_64-unknown-linux-musl
# Production container
FROM        scratch
COPY        --from=builder /rust/app/target/x86_64-unknown-linux-musl/release/microservice_app /app
ENTRYPOINT  ["/app"]

这是我的Rust项目结构

Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----        30-07-2020  07.36 PM                .github
d-----        30-07-2020  07.24 PM                src
d-----        30-07-2020  07.25 PM                target
-a----        30-07-2020  11.44 PM             19 .dockerignore
-a----        30-07-2020  07.24 PM              8 .gitignore
-a----        30-07-2020  10.58 PM          20573 Cargo.lock
-a----        30-07-2020  10.58 PM            250 Cargo.toml
-a----        31-07-2020  10.31 AM            974 Dockerfile

github操作的确切错误->

Step 11/12 : COPY        --from=builder /rust/app/target/x86_64-unknown-linux-musl/release/microservice_app /app
COPY failed: stat /var/lib/docker/overlay2/912bcbdb9b9198001ae5d1df4aec09ec54efb413fbb8981d165ee529ea9966a6/merged/rust/app/target/x86_64-unknown-linux-musl/release/microservice_app: no such file or directory
ERROR
ERROR: build step 0 "gcr.io/cloud-builders/docker" failed: step exited with non-zero status: 1

Answer 1

替换此COPY --from=builder /rust/app/target/x86_64-unknown-linux-musl/release/microservice_app /app

其中这=>

COPY        --from=builder /rust/app/target/x86_64-unknown-linux-musl/release/home_made_rust /app

二进制名称按照Cargo.toml文件

[package]
name = "home_made_rust"