Linux Docker运行错误：execappbackendserver：没有这样的文件或目录

我用简化的dockerfile和应用程序复制了您的问题(请try 提供minimal, reproducible, examples-我不得不猜测您使用的是哪个SQLite库):

backend.go:

package main

import (
    "database/sql"
    "log"
    "os"

    _ "github.com/mattn/go-sqlite3"
)

func main() {
    os.Remove("./foo.db")

    db, err := sql.Open("sqlite3", "./foo.db")
    if err != nil {
        log.Fatal(err)
    }
    defer db.Close()

    sqlStmt := `
    create table foo (id integer not null primary key, name text);
    delete from foo;
    `
    _, err = db.Exec(sqlStmt)
    if err != nil {
        log.Printf("%q: %s\n", err, sqlStmt)
        return
    }
}

dockerfile:

# Stage 1: Building the application
FROM golang:1.21 AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . ./
RUN apt-get update && apt-get install -y sqlite3 libsqlite3-dev
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o /app/server

# Stage 2: Production stage using Alpine
FROM alpine:latest
RUN apk --no-cache add ca-certificates sqlite
COPY --from=builder /app/server /app/server
EXPOSE 8081
ENTRYPOINT ["/app/server"]

启动容器(docker run -it --entrypoint /bin/sh server)中的shell 程序，我们可以看到可执行文件在那里，权限很好，但它不运行:

/ # ls -al /app/server
-rwxr-xr-x    1 root     root       6816280 Sep 22 02:29 /app/server
/ # /app/server
/bin/sh: /app/server: not found
/ # ldd /app/server
        /lib64/ld-linux-x86-64.so.2 (0x7ff8cb4ba000)
        libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7ff8cb4ba000)
Error relocating /app/server: fcntl64: symbol not found

很容易读到错误"Not Found"，并认为这一定是由于文件不在您预期的位置，或者具有错误的权限.但是，当可执行文件所依赖的内容丢失时，也会显示相同的错误.ldd显示了这个问题--可执行文件依赖于fcntl64；这个库是由glibc提供的，而不是musl(正如在阿尔卑斯山中使用的那样--glibc和musl之间的不兼容性是not uncommon).

最简单的解决方案是使用与运行该应用程序相同的操作系统编译该应用程序:

# Stage 1: Building the application
FROM golang:1.21-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . ./
RUN apk --no-cache add gcc g++ sqlite
RUN CGO_ENABLED=1 GOOS=linux go build -a -installsuffix cgo -o /app/server

# Stage 2: Production stage using Alpine
FROM alpine:latest
RUN apk --no-cache add ca-certificates sqlite
COPY --from=builder /app/server /app/server
EXPOSE 8081
ENTRYPOINT ["/app/server"]

然后运行以下命令(我的可执行文件没有输出，但我确认数据库已经创建):

/ # ls -al /app/server
-rwxr-xr-x    1 root     root       6838120 Sep 22 02:39 /app/server
/ # /app/server
/ # ldd /app/server
        /lib/ld-musl-x86_64.so.1 (0x7fabcb701000)
        libc.musl-x86_64.so.1 => /lib/ld-musl-x86_64.so.1 (0x7fabcb701000)
/ # ls -al ./foo.db 
-rw-r--r--    1 root     root          8192 Sep 22 02:40 ./foo.db

另一种 Select 是使用pure go library(不需要CGO).