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use multistage build to slim down backend container #22

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use multistage build to slim down backend container #22

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db5419c
perf: use multistage build to slim down backend container
lpmi-13 Jan 30, 2023
9820d3c
perf: add docker ignore to speed up transfer of build context
lpmi-13 Jan 30, 2023
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5 changes: 5 additions & 0 deletions .dockerignore
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
# these don't end up in the final image, but no need to consider them in the build context
*.md
LICENSE
images
ui
13 changes: 10 additions & 3 deletions Dockerfile
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@@ -1,4 +1,4 @@
FROM golang:latest
FROM golang:latest AS builder

LABEL app="slo-tracker"
LABEL maintainer="roshan.aloor@gmail.com"
Expand All @@ -8,9 +8,16 @@ LABEL description="slo-tracker : Track your product SLO"
WORKDIR /app

COPY . .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o /app/slo-tracker .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "-w -s" -o /app/slo-tracker .


FROM scratch

# we don't need these certs for local development, but we copy in case you want
# to use this image for a production environment
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /app/slo-tracker /app/slo-tracker

EXPOSE 8080

CMD /app/slo-tracker
CMD ["/app/slo-tracker"]