Optimize docker image size

Dockerfile

@@ -1,22 +1,51 @@
-FROM node:21-slim as base
+FROM node:21-alpine as base
 
-EXPOSE 3000/tcp
 WORKDIR /usr/app
-COPY ./ ./
+COPY ./package.json \
+     ./package-lock.json \
+     ./next.config.js \
+     ./next-env.d.ts \
+     ./tsconfig.json \
+     ./tailwind.config.js \
+     ./postcss.config.js ./
+COPY ./prisma ./prisma
+COPY ./src ./src
 
-RUN apt update && \
-    apt install openssl -y && \
-    apt clean && \
-    apt autoclean && \
-    apt autoremove && \
+RUN apk add --no-cache openssl && \
     npm ci --ignore-scripts && \
-    npm install -g prisma && \
-    prisma generate
+    npx prisma generate
 
 # env vars needed for build not to fail
-ARG POSTGRES_PRISMA_URL
-ARG POSTGRES_URL_NON_POOLING
+ENV POSTGRES_PRISMA_URL=http://temporary.build.url
+ENV POSTGRES_URL_NON_POOLING=http://temporary.build.url
 
+ENV NEXT_TELEMETRY_DISABLED=1
 RUN npm run build
 
-ENTRYPOINT ["/usr/app/scripts/container-entrypoint.sh"]
+RUN rm -r .next/cache
+
+FROM node:21-alpine as runtime-deps
+
+WORKDIR /usr/app
+RUN apk add --no-cache zstd
+COPY --from=base /usr/app/package.json /usr/app/package-lock.json ./
+COPY --from=base /usr/app/.next ./.next
+COPY --from=base /usr/app/prisma ./prisma
+COPY ./public ./public
+
+RUN npm ci --omit=dev --omit=optional --ignore-scripts && \
+    npx prisma generate
+
+RUN tar cvf - . | zstd -o app.tar.zst
+
+FROM node:21-alpine as runner
+
+WORKDIR /usr/app
+RUN apk add --no-cache zstd
+
+COPY ./scripts ./scripts
+COPY --from=runtime-deps /usr/app/app.tar.zst ./app.tar.zst
+
+EXPOSE 3000/tcp
+
+ENTRYPOINT ["/bin/sh", "/usr/app/scripts/container-entrypoint.sh"]

package.json

@@ -53,7 +53,8 @@
     "ts-pattern": "^5.0.6",
     "uuid": "^9.0.1",
     "vaul": "^0.8.0",
-    "zod": "^3.22.4"
+    "zod": "^3.22.4",
+    "prisma": "^5.7.0"
   },
   "devDependencies": {
     "@total-typescript/ts-reset": "^0.5.1",
@@ -70,7 +71,6 @@
     "postcss": "^8",
     "prettier": "^3.0.3",
     "prettier-plugin-organize-imports": "^3.2.3",
-    "prisma": "^5.7.0",
     "tailwindcss": "^3",
     "tsconfig-paths": "^4.2.0",
     "typescript": "^5.3.3"

scripts/build-image.sh

@@ -5,9 +5,6 @@ SPLIIT_VERSION=$(node -p -e "require('./package.json').version")
 
 # we need to set dummy data for POSTGRES env vars in order for build not to fail
 docker buildx build \
-    --no-cache \
-    --build-arg POSTGRES_PRISMA_URL=postgresql://build:@db \
-    --build-arg POSTGRES_URL_NON_POOLING=postgresql://build:@db \
     -t ${SPLIIT_APP_NAME}:${SPLIIT_VERSION} \
     -t ${SPLIIT_APP_NAME}:latest \
     .

scripts/container-entrypoint.sh

@@ -1,3 +1,11 @@
 #!/bin/bash
-prisma migrate deploy
+
+set -euxo pipefail
+
+if [[ -f "app.tar.zst" ]]; then
+  zstd -d app.tar.zst -c | tar xf -
+  rm app.tar.zst
+fi
+
+npx prisma migrate deploy
 npm run start