v3/hack/dockerfiles/legacy.Dockerfile

47 lines
1.4 KiB
Docker

FROM golang:1.15-alpine AS base
# Create the user and group files that will be used in the running container to
# run the process as an unprivileged user.
RUN mkdir /user \
&& echo 'nobody:x:65534:65534:nobody:/:' >/user/passwd \
&& echo 'nobody:x:65534:' >/user/group
# Install the Certificate-Authority certificates for the app to be able to make
# calls to HTTPS endpoints.
# Git is required for fetching the dependencies.
RUN apk add --no-cache ca-certificates git
# Set the working directory outside $GOPATH to enable the support for modules.
WORKDIR /src
# Fetch dependencies first; they are less susceptible to change on every build
# and will therefore be cached for speeding up the next build
COPY ./go.mod ./go.sum ./
RUN go mod download
# Import the code from the context.
COPY ./ ./
FROM base AS export-to-gcs
RUN CGO_ENABLED=0 go build \
-installsuffix "static" \
-o /export-to-gcs ./src/legacy/export-to-gcs
# Final stage: the running container.
FROM scratch AS final
# Import the user and group files from the first stage.
COPY --from=base /user/group /user/passwd /etc/
# Import the Certificate-Authority certificates for enabling HTTPS.
COPY --from=base /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
# Import the compiled executable from the first stage.
COPY --from=export-to-gcs /export-to-gcs /export-to-gcs
# Perform any further action as an unprivileged user.
USER nobody:nobody
# Run the compiled binary.
ENTRYPOINT ["/export-to-gcs"]