im trying to build docker image with my golang project
I use the following
#build stage
FROM golang:alpine as builder
WORKDIR /go/src/app
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags '-extldflags "-static"' -o main .
RUN apk add --no-cache git
#final stage
FROM alpine:latest
RUN apk --no-cache add ca-certificates
COPY --from=builder /go/bin/app /app
ENTRYPOINT ./app
LABEL Name=fzr-dbc Version=0.0.1
EXPOSE 3000
This build is failing in my main.go file which is looks like following
package main
import (
"fzr-dbc/cmd/tsr”
)
func main() {
tsr.Execute()
}
when I run the command docker build -t fzr . The error is:
main.go:4:2: cannot find package "fzr-dbc/cmd/tsr” in any of:
/go/src/app/vendor/fzr-dbc/cmd/tsr (vendor tree)
/usr/local/go/src/fzr-dbc/cmd/tsr (from $GOROOT)
/go/src/fzr-dbc/cmd/tsrs (from $GOPATH)
The error since it’s not finding my project path , what could be missing here ?
The docker file is in my root project fzr and I run the docker build from there
You are running go build in your Dockerfile:
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags '-extldflags "-static"' -o main .
This requires you to install all your dependencies for building it.
To fix this, either:
COPY the binary directly into the docker; or,RUN processes:GOPATH. Then, on that folder, run go get -u ./...go.mod and go.sum properly defined. Then you can use the command go mod download to download all the dependencies to the Go package cache inside your docker image.