chore: add dockerfile for express server

compose.yml

@@ -5,6 +5,7 @@ services:
     container_name: rss-graphql-db
     build:
       context: .
+      dockerfile: db.Dockerfile
     volumes:
       - rss-graphql-db-data:/var/lib/postgresql/data
     ports:
@@ -14,6 +15,12 @@ services:
       POSTGRES_PASSWORD: ${PASSWORD}
       POSTGRES_DB: rss-graphql-db
     restart: always
-
+  server:
+    container_name: rss-graphql-server
+    build:
+      context: .
+      dockerfile: server.Dockerfile
+    ports:
+      - 4000:4000
 volumes:
   rss-graphql-db-data:

server.Dockerfile

@@ -0,0 +1,25 @@
+# REF: https://pnpm.io/docker
+
+FROM node:20-slim AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+
+# this is necessary in prisma
+RUN apt-get update -y && apt-get install -y openssl
+
+RUN corepack enable
+COPY . /app
+WORKDIR /app
+
+FROM base AS prod-deps
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
+
+FROM base AS build
+RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
+RUN pnpm run build
+
+FROM base
+COPY --from=prod-deps /app/node_modules /app/node_modules
+COPY --from=build /app/dist /app/dist
+EXPOSE 4000
+CMD [ "pnpm", "start" ]