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| author | Franck Cuny <franck@fcuny.net> | 2021-08-14 14:52:36 -0700 |
|---|---|---|
| committer | Franck Cuny <franck@fcuny.net> | 2021-08-14 14:52:36 -0700 |
| commit | 714b3309ec5c8d7d4881ba2965be84b3a49b76b8 (patch) | |
| tree | b0ab6d91b4c2b33ad71ef7446788217807c98529 | |
| parent | config: add vanity (diff) | |
| download | world-714b3309ec5c8d7d4881ba2965be84b3a49b76b8.tar.gz | |
build: trim the size of the Docker container
Prior to this change, the size of the image was about 300MB: ``` ; docker images|grep fcuny/golang|grep days fcuny/golang.fcuny.net d07add42f21a69e2c057eae8492bbd599dc50082 9fd284c5d8ee 2 days ago 313MB fcuny/golang.fcuny.net ca3dd083f8d6642821781ce03829713524322bbe 8104afadfd1f 2 days ago 313MB ``` With this change, we're reducing the image to less than 10MB: ``` fcuny/golang.fcuny.net 19b3dccc1ff31534df3636d4d7d6a28c0ae1e189 c9ae35574f8e 24 seconds ago 9.09MB ``` Since there's storage and bandwidth involved in this process, there's no point in not going for a smaller image.
| -rw-r--r-- | tools/govanity/Dockerfile | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/tools/govanity/Dockerfile b/tools/govanity/Dockerfile index caca19a..db471c8 100644 --- a/tools/govanity/Dockerfile +++ b/tools/govanity/Dockerfile @@ -1,13 +1,30 @@ -FROM golang:1.16-alpine +FROM golang:1.16 AS builder WORKDIR /src +ENV USER=app +RUN adduser \ + --disabled-password \ + --gecos "" \ + --home "/src" \ + --shell "/sbin/nologin" \ + --uid "10001" \ + "${USER}" + ADD go.mod /src ADD go.sum /src RUN go mod download ADD . /src -RUN go build -o app . +RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -a -installsuffix cgo -ldflags '-extldflags "-static"' -o app . + +FROM scratch +COPY --from=builder /src/app /govanity +COPY --from=builder /src/vanity.yaml /vanity.yaml +COPY --from=builder /etc/passwd /etc/passwd +COPY --from=builder /etc/group /etc/group + +USER app:app -ENTRYPOINT ["/src/app"] +ENTRYPOINT ["/govanity"] |