Heredoc Golang Dockerfile

Dockerfile

# syntax=docker/dockerfile:1.4.1
FROM golang:1.19 AS build
COPY <<EOF main.go
package main

import (
   "fmt"
)
func main() {
   fmt.Println("Hello Distroless-World")
}
EOF

RUN go build -o /demo main.go

FROM ghcr.io/distroless/static@sha256:baf53a1c76184d7e56541a5cdd3f03beea2b22f7112dd71f59dd0b557493290c
COPY --from=build /demo /usr/bin/demo
ENTRYPOINT ["/usr/bin/demo"]