


Troubleshooting "no such file or directory" Error with Docker Scratch Image
The frustrating "no such file or directory" error message can arise while working with Docker scratch images. This error typically indicates a mismatch between the binary name and its actual name, or a missing dynamic link to an essential library.
In Docker scratch images, binaries are often copied from a base image. As illustrated in the provided Dockerfile, a scratch image is built by copying essential files like /etc/passwd and the binary $PROJ_BIN_PATH from a base image. However, to resolve this error, it's essential to disable CGO (C Go) using the CGO_ENABLED=0 directive.
With CGO enabled, dynamic links to libraries like libc or libmusl can be created, leading to errors when these libraries are unavailable in the scratch image. By disabling CGO, statically compiled binaries are created, removing the need for external library references.
To fix the error using this solution, replace the existing RUN GOOS=linux GOARCH=amd64 go build command with the following in your Dockerfile:
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \ -ldflags="-w -s" -o $PROJ_BIN_PATH ./cmd/...
This will ensure that your binary is statically compiled and won't depend on external libraries, resolving the "no such file or directory" error.
Alternatively, you can check for dynamic links by leveraging the ldd command within Docker, as suggested in the provided solution. By running docker build --target=0 -t your_go_image . and then docker run -it --rm your_go_image ldd /$PROJ_NAME, you can examine the dynamic dependencies of your binary and identify any potential missing libraries.
The above is the detailed content of How to Solve 'no such file or directory' Errors in Docker Scratch Images?. For more information, please follow other related articles on the PHP Chinese website!

Golang and C each have their own advantages in performance competitions: 1) Golang is suitable for high concurrency and rapid development, and 2) C provides higher performance and fine-grained control. The selection should be based on project requirements and team technology stack.

Golang is suitable for rapid development and concurrent programming, while C is more suitable for projects that require extreme performance and underlying control. 1) Golang's concurrency model simplifies concurrency programming through goroutine and channel. 2) C's template programming provides generic code and performance optimization. 3) Golang's garbage collection is convenient but may affect performance. C's memory management is complex but the control is fine.

Goimpactsdevelopmentpositivelythroughspeed,efficiency,andsimplicity.1)Speed:Gocompilesquicklyandrunsefficiently,idealforlargeprojects.2)Efficiency:Itscomprehensivestandardlibraryreducesexternaldependencies,enhancingdevelopmentefficiency.3)Simplicity:

C is more suitable for scenarios where direct control of hardware resources and high performance optimization is required, while Golang is more suitable for scenarios where rapid development and high concurrency processing are required. 1.C's advantage lies in its close to hardware characteristics and high optimization capabilities, which are suitable for high-performance needs such as game development. 2.Golang's advantage lies in its concise syntax and natural concurrency support, which is suitable for high concurrency service development.

Golang excels in practical applications and is known for its simplicity, efficiency and concurrency. 1) Concurrent programming is implemented through Goroutines and Channels, 2) Flexible code is written using interfaces and polymorphisms, 3) Simplify network programming with net/http packages, 4) Build efficient concurrent crawlers, 5) Debugging and optimizing through tools and best practices.

The core features of Go include garbage collection, static linking and concurrency support. 1. The concurrency model of Go language realizes efficient concurrent programming through goroutine and channel. 2. Interfaces and polymorphisms are implemented through interface methods, so that different types can be processed in a unified manner. 3. The basic usage demonstrates the efficiency of function definition and call. 4. In advanced usage, slices provide powerful functions of dynamic resizing. 5. Common errors such as race conditions can be detected and resolved through getest-race. 6. Performance optimization Reuse objects through sync.Pool to reduce garbage collection pressure.

Go language performs well in building efficient and scalable systems. Its advantages include: 1. High performance: compiled into machine code, fast running speed; 2. Concurrent programming: simplify multitasking through goroutines and channels; 3. Simplicity: concise syntax, reducing learning and maintenance costs; 4. Cross-platform: supports cross-platform compilation, easy deployment.

Confused about the sorting of SQL query results. In the process of learning SQL, you often encounter some confusing problems. Recently, the author is reading "MICK-SQL Basics"...


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