Dockerfile

# syntax=docker/dockerfile:1

# Create a stage for building the application.
ARG GO_VERSION=1.22.1
FROM  --platform=$BUILDPLATFORM golang:${GO_VERSION} AS build
WORKDIR /src

# Download dependencies as a separate step to take advantage of Docker's caching.
# Leverage a cache mount to /go/pkg/mod/ to speed up subsequent builds.
# Leverage bind mounts to go.sum and go.mod to avoid having to copy them into
# the container.
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

# This is the architecture you’re building for, which is passed in by the builder.
# Placing it here allows the previous steps to be cached across architectures.
ARG TARGETARCH

# Build the application.
# Leverage a cache mount to /go/pkg/mod/ to speed up subsequent builds.
# Leverage a bind mount to the current directory to avoid having to copy the
# source code into the container.
RUN --mount=type=cache,target=/go/pkg/mod/ \
    --mount=type=bind,target=. \
    CGO_ENABLED=0 GOARCH=$TARGETARCH go build -o /bin/server ./cmd


FROM --platform=$BUILDPLATFORM node:21.7.1-alpine AS frontend
WORKDIR /usr/src/app

RUN --mount=type=bind,source=./web/package.json,target=package.json \
    --mount=type=bind,source=./web/package-lock.json,target=package-lock.json \
    --mount=type=cache,target=/root/.npm \
    npm ci

COPY ./web .

RUN npm run build


FROM alpine:latest AS final
WORKDIR /src

# Copy the executable from the "build" stage.
COPY --from=build /bin/server /src/

COPY --from=frontend /usr/src/app/dist ./web/dist

# Expose the port that the application listens on.
EXPOSE 3000

# What the container should run when it is started.
CMD [ "./server" ]