Dockerfile

# syntax=docker/dockerfile:1

ARG GO_VERSION=1.22
ARG ALPINE_VERSION=3.20
FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS build
WORKDIR /app

RUN --mount=type=cache,target=/go/pkg/mod/ \
    --mount=type=bind,source=go.sum,target=go.sum \
    --mount=type=bind,source=go.mod,target=go.mod \
    go mod download -x

ARG TARGETARCH

RUN --mount=type=cache,target=/go/pkg/mod/ \
    --mount=type=bind,target=. \
    CGO_ENABLED=0 GOARCH=$TARGETARCH go build -ldflags="-s -w" -o /bin/server .


FROM alpine:latest AS final

RUN --mount=type=cache,target=/var/cache/apk \
    apk --update add \
        ca-certificates \
        tzdata \
        && \
        update-ca-certificates \
        && \
        apk add --no-cache curl \
        && \
        apk add gcc g++ libc-dev librdkafka-dev pkgconf

ARG UID=10001
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home "/nonexistent" \
    --shell "/sbin/nologin" \
    --no-create-home \
    --uid "${UID}" \
    appuser

WORKDIR /app
COPY --from=build /bin/server /app/server
COPY .env .
COPY start.sh .
COPY wait-for-it.sh .
COPY db/migrations ./migration

RUN chmod +x start.sh
RUN chmod +x wait-for-it.sh

RUN curl -L https://github.com/golang-migrate/migrate/releases/download/v4.17.1/migrate.linux-amd64.tar.gz | tar xvz

EXPOSE 3000

USER appuser

ENTRYPOINT [ "/app/start.sh" ]
CMD [ "/app/server" ]