fix(Dockerfile): specify nginx version for better predictability

Dockerfile

@@ -1,10 +1,11 @@
 FROM node:20-slim AS base
+
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 RUN corepack enable
+
 WORKDIR /app
-COPY package.json ./
-COPY pnpm-lock.yaml ./
+COPY package.json pnpm-lock.yaml ./
 
 FROM base AS prod-deps
 RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
@@ -14,12 +15,14 @@ RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --frozen-lockfile
 
 FROM build-deps AS build
 COPY . .
-
 ARG SITE_URL
 ENV SITE_URL=${SITE_URL}
-
 RUN pnpm run build
 
-FROM nginx:alpine AS runtime
+FROM nginx:1.25-alpine AS runtime
+COPY nginx/nginx.conf /etc/nginx/nginx.conf
 COPY --from=build /app/dist /usr/share/nginx/html
+
 EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]