Dockerfile

# syntax=docker/dockerfile:1

# Comments are provided throughout this file to help you get started.
# If you need more help, visit the Dockerfile reference guide at
# https://docs.docker.com/go/dockerfile-reference/

# Want to help us make this template better? Share your feedback here: https://forms.gle/ybq9Krt8jtBL3iCk7

################################################################################
# Use node image for base image for all stages.
FROM node:20.17.0-alpine AS front_base

# Set working directory for all build stages.
WORKDIR /usr/src/app


################################################################################
# Create a stage for installing production dependecies.
FROM front_base AS deps

# Download dependencies as a separate step to take advantage of Docker's caching.
# Leverage a cache mount to /root/.npm to speed up subsequent builds.
# Leverage bind mounts to package.json and package-lock.json to avoid having to copy them
# into this layer.
RUN --mount=type=bind,source=frontend/package.json,target=package.json \
    --mount=type=bind,source=frontend/package-lock.json,target=package-lock.json \
    --mount=type=cache,target=/root/.npm \
    npm ci --omit=dev

################################################################################
# Create a stage for building the application.
FROM deps AS front_build

# Download additional development dependencies before building, as some projects require
# "devDependencies" to be installed to build. If you don't need this, remove this step.
RUN --mount=type=bind,source=frontend/package.json,target=package.json \
    --mount=type=bind,source=frontend/package-lock.json,target=package-lock.json \
    --mount=type=cache,target=/root/.npm \
    npm ci

# Copy the rest of the source files into the image.
COPY frontend .

ENV NODE_ENV='production'

# Run the build script.
RUN npm run build


################################################################################
# Create a stage for building the application.
FROM --platform=$BUILDPLATFORM golang:1.23.1 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 -ldflags='-s -w' -trimpath -o /bin/server .

################################################################################
# Create a new stage for running the application that contains the minimal
# runtime dependencies for the application. This often uses a different base
# image from the build stage where the necessary files are copied from the build
# stage.
#
# The example below uses the alpine image as the foundation for running the app.
# By specifying the "latest" tag, it will also use whatever happens to be the
# most recent version of that image when you build your Dockerfile. If
# reproducability is important, consider using a versioned tag
# (e.g., alpine:3.17.2) or SHA (e.g., alpine@sha256:c41ab5c992deb4fe7e5da09f67a8804a46bd0592bfdf0b1847dde0e0889d2bff).
FROM gcr.io/distroless/static:nonroot AS final

# Install any runtime dependencies that are needed to run your application.
# Leverage a cache mount to /var/cache/apk/ to speed up subsequent builds.
#RUN --mount=type=cache,target=/var/cache/apk \
#    apk --update add \
#        ca-certificates \
#        tzdata \
#        && \
#        update-ca-certificates
#
## Create a non-privileged user that the app will run under.
## See https://docs.docker.com/go/dockerfile-user-best-practices/
#ARG UID=10001
#RUN adduser \
#    --disabled-password \
#    --gecos "" \
#    --home "/nonexistent" \
#    --shell "/sbin/nologin" \
#    --no-create-home \
#    --uid "${UID}" \
#    appuser
#USER appuser

WORKDIR /

# Copy the executable from the "build" stage.
COPY --from=build /bin/server .
COPY --from=front_build /usr/src/app/dist ./static

# Expose the port that the application listens on.
EXPOSE 8080
ENV GIN_MODE=release

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