molten briar
hello guys anyone can help me about docker im deployed on gcp but
terminated: Application failed to start: Failed to create init process: failed to load /app: no such file or directory
FROM golang:1.19
WORKDIR /app
COPY . .
RUN go mod init github.com/nuriansyah/services-logbook-mbkm && go get -d -v ./... && go build -o /app ./cmd/server/main.go
EXPOSE 8080
CMD ["/app"]
manic lichen
FROM golang:latest as build
WORKDIR /build
COPY . .
RUN go get -d && \
CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-w -extldflags "-static"' -o app .
FROM alpine:latest as run
WORKDIR /app
COPY --from=build /build/app .
ENTRYPOINT ["/app/app"]
go mod init initializes a new project/module and gives it a name.
autumn whale
```Dockerfile
FROM golang:latest as build
WORKDIR /build
COPY . .
RUN go get -d...
I believe CGO_ENABLED and GOOS is extra env var here
manic lichen
? it's telling the compiler to disable cgo, as alpine does not have a full glibc (but musl). GOOS is telling the compiler to build for linux, tho not explicitly needed as the compiler knows what platform it is running on.
it is not supposed to be defined as container env var
molten briar
ahhh solved
tender moss
FROM golang:latest as build
WORKDIR /build
COPY go.mod
COPY go.sum
RUN go mod download
COPY . .
RUN go get -d && \
CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-w -extldflags "-static"' -o app .
FROM alpine:latest as run
WORKDIR /app
COPY --from=build /build/app .
ENTRYPOINT ["/app/app"]
if i am not wrong. with copy go.mod, go.sum and run go mod download, will allow you to use docker cache steps.
so you don't need to download dependencies every time.
manic lichen
interesting
will test that with our build pipelines
we use kaniko for building docker images in a k8s cluster which takes forever. This might help reduce the time by like 20% (1min)
autumn whale
```dockerfile
FROM golang:latest as build
WORKDIR /build
COPY go.mod
COPY go.su...
If you want cache the build progress, you can use RUN --mount=type=cache,target=/root/.cache/go-build go build ***
tender moss
If you want cache the build progress, you can use `RUN --mount=type=cache,target...
ah it needs the escape character "".
\
just like on documentation
RUN \
--mount=type=cache,target=/var/cache/apt \
apt-get update && apt-get install -y git
but i looks interesting.
autumn whale
ah it needs the escape character "\".
You only need it when it's multi line
Actually my example is in a single line, just discord problem