docker build setup

Dockerfile

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+# use the official Bun image
+# see all versions at https://hub.docker.com/r/oven/bun/tags
+FROM oven/bun:1-alpine AS base
+WORKDIR /app
+COPY package.json bun.lockb /app/
+
+# install dependencies into temp directory
+# this will cache them and speed up future builds
+FROM base AS install
+RUN mkdir -p /temp/dev
+COPY package.json bun.lockb /temp/dev/
+RUN cd /temp/dev && bun install --frozen-lockfile
+
+# install with --production (exclude devDependencies)
+RUN mkdir -p /temp/prod
+COPY package.json bun.lockb /temp/prod/
+RUN cd /temp/prod && bun install --frozen-lockfile --production
+
+# copy node_modules from temp directory
+# then copy all (non-ignored) project files into the image
+FROM base AS builder
+COPY --from=install /temp/dev/node_modules /app/node_modules
+COPY . /app
+RUN bun run build
+
+FROM base
+# Metadata
+LABEL org.opencontainers.image.title="VPGen"
+LABEL org.opencontainers.image.description="A VPN config generator built with SvelteKit."
+LABEL org.opencontainers.image.url="https://gitea.cazzzer.com/CaZzzer/vpgen"
+LABEL org.opencontainers.image.source="https://gitea.cazzzer.com/CaZzzer/vpgen"
+LABEL org.opencontainers.image.version="0.1"
+
+COPY ./entrypoint.sh /entrypoint.sh
+COPY --from=install /temp/prod/node_modules /app/node_modules
+COPY --from=builder /app/build /app/build
+COPY --from=builder /app/drizzle /app/drizzle
+COPY --from=builder /app/drizzle.config.ts /app/
+
+EXPOSE 3000
+
+# entrypoint for drizzle migrations
+ENTRYPOINT ["sh", "/entrypoint.sh"]
+
+CMD ["bun", "./build"]