I am following directory structure based on: https://github.com/golang-standards/project-layout
I have created very simple app and basically I want to containerize it. Basically I have two files there. server.go which is definition of http endpoint and main file which starts server called main.go under cmd/webserver.
Directory of this project looks like:
./
├── cmd
│ └── webserver
│ └── main.go
├── Dockerfile
├── go.mod
└── server.go
go.mod
module github.com/geborskimateusz/auth
go 1.15
a Dockerfile looks like this
FROM golang:alpine
# Set necessary environmet variables needed for our image
ENV GO111MODULE=on \
CGO_ENABLED=0 \
GOOS=linux \
GOARCH=amd64
# Move to working directory /build
WORKDIR /build
# Copy and download dependency using go mod
COPY go.mod .
RUN go mod download
# Copy the code into the container
COPY . .
# Build the application
RUN go build -o main .
# Move to /dist directory as the place for resulting binary folder
WORKDIR /dist
# Copy binary from build to main folder
RUN cp /build/main .
# Export necessary port
EXPOSE 3000
# Command to run when starting the container
CMD ["/dist/main"]:
Build is successful but the problem is that when I run docker run -p 3000:3000 geborskimateusz/auth I got:
docker: Error response from daemon: OCI runtime create failed: container_linux.go:349: starting container process caused "exec: \"/dist/main\": permission denied": unknown.
ERRO[0000] error waiting for container: context canceled
What am I missing? I assume that maybe I need to cd in Dockerfile into cmd/webserver where main.go (executable file) is placed.
