feat: add docker support

Dockerfile

@@ -0,0 +1,36 @@
+FROM oven/bun:1-alpine AS base
+WORKDIR /usr/src/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.lock /temp/dev/
+RUN cd /temp/dev && bun install --frozen-lockfile
+
+# install with --production (exclude devDependencies)
+RUN mkdir -p /temp/prod
+COPY package.json bun.lock /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 prerelease
+COPY --from=install /temp/dev/node_modules node_modules
+COPY . .
+
+# [optional] tests & build
+# ENV NODE_ENV=production
+# RUN bun test
+# RUN bun run build
+
+# copy production dependencies and source code into final image
+FROM base AS release
+COPY --from=install /temp/prod/node_modules node_modules
+COPY --from=prerelease /usr/src/app/src src/
+COPY --from=prerelease /usr/src/app/package.json .
+
+# run the app
+USER bun
+EXPOSE 3000/tcp
+ENTRYPOINT [ "bun", "run", "src/main.ts" ]

README.md

@@ -29,11 +29,29 @@ You can run this yourself to host your own instance, or contribute to the offici
 
 ### Setup
 
-Docker is coming soon!
+#### Docker
+
+1. Build the Docker image:
+	 ```bash
+	 docker build -t trafficcue-server .
+	 ```
+2. Run the Docker container with the required environment variables:
+	 ```bash
+	 docker run -d \
+	   -p 3000:3000 \
+		 --add-host host.docker.internal:host-gateway \
+	   -e DATABASE_URL=postgres://user:password@host:port/database \
+		 ... # other environment variables as needed \
+	   trafficcue-server
+	 ```
+	 or use docker compose as usual.
+
+#### Local
 
 1. Clone this repository
 2. Run `bun install` to install dependencies
 3. Launch the app at `src/main.ts` with the environment variables set:
+	 - `DATABASE_URL` (PostgreSQL connection string: `postgres://user:password@host:port/database`)
 	 - `GOOGLE_GENERATIVE_AI_API_KEY` (optional, to enable MapAI features. Its free at Google!)
 	 - `TANKERKOENIG_API_KEY` (optional, to enable fuel price features. Its free!)
 	 - `OIDC_ENABLED` (needs to be enabled for most features requiring authentication)