database url secret / env variable for ci/cd

Dockerfile

@@ -1,3 +1,5 @@
+ARG DATABASE_URL
+
 # --- Stage 1: Dependencies ---
 FROM node:20-alpine AS dependencies
 RUN corepack enable
@@ -8,6 +10,7 @@ RUN yarn install
 
 # --- Stage 2: Builder ---
 FROM node:20-alpine AS builder
+ENV DATABASE_URL=${DATABASE_URL}
 RUN corepack enable
 RUN corepack prepare yarn@stable --activate
 WORKDIR /app
@@ -18,6 +21,7 @@ RUN yarn build
 
 # --- Stage 3: Runner ---
 FROM node:20-alpine AS runner
+ENV DATABASE_URL=$DATABASE_URL
 RUN corepack enable
 RUN corepack prepare yarn@stable --activate
 WORKDIR /app