Fix better-sqlite3 Alpine build: force source compilation via env var

npm_config_build_from_source=true tells prebuild-install to skip the prebuilt
glibc binary download and compile against the container's musl libc instead.
The previous attempt (npm rebuild --build-from-source) ran after the glibc
binary was already installed and didn't override it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/Dockerfile

@@ -5,7 +5,9 @@ RUN apk add --no-cache python3 make g++
 WORKDIR /app
 
 COPY package*.json ./
-RUN npm ci --omit=dev && npm rebuild better-sqlite3 --build-from-source
+# build_from_source tells prebuild-install to compile better-sqlite3 against
+# musl (Alpine) instead of downloading a prebuilt glibc binary
+RUN npm_config_build_from_source=true npm ci --omit=dev
 
 COPY . .