# syntax=docker/dockerfile:1.7
FROM alpine:3.21 AS css
ARG TARGETARCH
ARG TAILWIND_VERSION=v3.4.17
WORKDIR /src
RUN apk add --no-cache ca-certificates curl \
    && case "$TARGETARCH" in amd64) tw_arch=x64 ;; arm64) tw_arch=arm64 ;; *) exit 1 ;; esac \
    && curl -fsSL -o /usr/local/bin/tailwindcss "https://github.com/tailwindlabs/tailwindcss/releases/download/${TAILWIND_VERSION}/tailwindcss-linux-${tw_arch}" \
    && chmod +x /usr/local/bin/tailwindcss
COPY tailwind.config.js ./
COPY web/input.css web/input.css
COPY web/templates web/templates
RUN mkdir -p web/static && tailwindcss -c tailwind.config.js -i web/input.css -o web/static/app.css --minify

FROM golang:1.22-bookworm AS build
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
COPY . .
COPY --from=css /src/web/static/app.css web/static/app.css
RUN CGO_ENABLED=0 GOOS=linux go build -trimpath -ldflags="-s -w" -o /todo ./cmd/server

FROM gcr.io/distroless/static-debian12:nonroot
COPY --from=build /todo /todo
EXPOSE 8080
USER nonroot:nonroot
ENTRYPOINT ["/todo"]