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@michaelboke
Last active September 24, 2025 08:54
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Docker scratch x509 fix
FROM golang:alpine as builder
WORKDIR /app
#the following 2 steps are optional if your image does not already have the certificate
# package installed, golang:alpine now seems to have it. But a more base image could be missing it.
#RUN apk update && apk upgrade && apk add --no-cache ca-certificates
#RUN update-ca-certificates
ADD main.go /app/main.go
RUN CGO_ENABLED=0 GOOS=linux go build -a -ldflags="-s -w" -installsuffix cgo -o app .
FROM scratch
COPY --from=builder /app/app .
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
CMD ["./app"]
package main
import (
"net/http"
"fmt"
)
func main(){
_, err := http.Get("https://www.google.com")
if err!= nil {
panic(err)
}
fmt.Println("success")
}
@michal-laskowski
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🔥

@imjulianeral
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You are a godsend sir. Thanks for sharing.

@MaikeMota
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You are a lifesaver!
Thank you so much!

@fuad-daoud
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thanks

worked without

RUN apk update && apk upgrade && apk add --no-cache ca-certificates
RUN update-ca-certificates

just

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

@Vrashabh-Sontakke
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@fuad-daoud how ?

@michaelboke
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Author

thanks

worked without

RUN apk update && apk upgrade && apk add --no-cache ca-certificates
RUN update-ca-certificates

just

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

Yes it does seems that the golang:alpine now has certificates rebuild inside the docker image.
Thanks for noticing

@gewooneendeveloper
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Great help! thx alot

@tenequm
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tenequm commented Feb 19, 2025

❤️

@Aspiand
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Aspiand commented Sep 24, 2025

thank you bro

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