Dockerfile

FROM node:18-alpine AS build-web

ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable

WORKDIR /app

COPY pnpm-lock.yaml ./
COPY pnpm-workspace.yaml ./

# Build web app

COPY apps/web/package.json ./

RUN pnpm install --no-frozen-lockfile

COPY apps/web .

RUN pnpm install
RUN pnpm run build

RUN mv dist/index.html dist/app.html

FROM node:18-alpine AS build-index

ENV PNPM_HOME="/pnpm"
ENV PATH="$PNPM_HOME:$PATH"
RUN corepack enable

WORKDIR /app

COPY pnpm-lock.yaml ./
COPY pnpm-workspace.yaml ./

# Build landing page

COPY landing-page/package.json ./
RUN pnpm install --no-frozen-lockfile

COPY landing-page .

RUN pnpm install
RUN pnpm run build

FROM amazoncorretto:21-alpine AS build

WORKDIR /app

# Install findutils (gradlew sometimes requires xargs/find)
RUN apk add --no-cache findutils

COPY ./api/build.gradle.kts ./api/settings.gradle.kts ./api/gradlew ./
COPY ./api/gradle ./gradle

COPY api/src ./src

# Inject the compiled frontends into Spring Boot's static resources
COPY --from=build-web /app/dist/ ./src/main/resources/static
COPY --from=build-index /app/dist ./src/main/resources/static

RUN chmod +x ./gradlew

# Build the standard JVM fat JAR.
# We use -x test to skip tests during the Docker build for speed.
RUN ./gradlew build --no-daemon -x test

FROM amazoncorretto:21-alpine AS runtime

WORKDIR /app

# Create a non-root user for security (Best practice for AWS Fargate)
RUN addgroup -S spring && adduser -S spring -G spring
USER spring:spring

# Copy the compiled JAR from the build stage.
# (Spring Boot creates the executable JAR in build/libs/)
COPY --from=build /app/build/libs/*.jar app.jar

EXPOSE 8080

# Run the JVM.
# We add MaxRAMPercentage so the JVM respects AWS Fargate container memory limits!
ENTRYPOINT ["java", "-XX:MaxRAMPercentage=75.0", "-jar", "app.jar"]