fix: use node slim to fix arm builds

Dockerfile

@@ -1,35 +1,37 @@
+# Using node slim because prisma ORM needs libc for ARM builds
+
 # Stage 1: on frontend dependency change
-FROM node:18-alpine AS frontend-dependencies
+FROM node:18-slim AS frontend-dependencies
 WORKDIR /opt/app
 COPY frontend/package.json frontend/package-lock.json ./
 RUN npm ci
 
 # Stage 2: on frontend change
-FROM node:18-alpine AS frontend-builder
+FROM node:18-slim AS frontend-builder
 WORKDIR /opt/app
 COPY ./frontend .
 COPY --from=frontend-dependencies /opt/app/node_modules ./node_modules
 RUN npm run build
 
 # Stage 3: on backend dependency change
-FROM node:18-alpine AS backend-dependencies
+FROM node:18-slim AS backend-dependencies
 WORKDIR /opt/app
 COPY backend/package.json backend/package-lock.json ./
 RUN npm ci
 
 # Stage 4:on backend change
-FROM node:18-alpine AS backend-builder
-RUN apk add --update openssl
+FROM node:18-slim AS backend-builder
+RUN apt-get update && apt-get install -y openssl
 WORKDIR /opt/app
 COPY ./backend .
 COPY --from=backend-dependencies /opt/app/node_modules ./node_modules
 RUN npx prisma generate
 RUN npm run build  && npm prune --production
 
 # Stage 5: Final image
-FROM node:18-alpine AS runner
+FROM node:18-slim AS runner
 ENV NODE_ENV=production
-RUN apk add --update openssl
+RUN apt-get update && apt-get install -y openssl
 
 WORKDIR /opt/app/frontend
 COPY --from=frontend-builder /opt/app/public ./public