opt: try adding support for custom UID/GID executions

Dockerfile

@@ -1,28 +1,33 @@
 # https://github.com/nodejs/docker-node/blob/main/docs/BestPractices.md
 FROM node:22.9.0-slim AS base
-ENV PNPM_HOME="/pnpm"
+ENV PNPM_HOME="/opt/pnpm"
+ENV COREPACK_HOME="/opt/corepack"
 ENV PATH="$PNPM_HOME:$PATH"
 
 RUN apt-get update && apt-get install -y \
     git \
-    && rm -rf /var/lib/apt/lists/* \
-    && corepack enable \
-    && corepack prepare pnpm@9 --activate
+    && rm -rf /var/lib/apt/lists/*
 WORKDIR /app
 COPY package.json pnpm-lock.yaml /app/
 
+# Do it here to add the packageManager field to the package.json
+RUN corepack enable \
+    && corepack prepare pnpm@9 --activate \
+    && corepack use pnpm@9
+
 FROM base AS prod-deps
 RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
 
 FROM base
-RUN corepack use pnpm@9
 COPY --from=prod-deps /app/node_modules /app/node_modules
 COPY index.ts /app/
 COPY src/ /app/src/
 
 ENV CONFIG_LOCATION=/app/config/config.yml
 ENV SECRETS_LOCATION=/app/config/secrets.yml
 
+RUN chmod uga+rw -R /app/package.json
+
 #USER node
 
 CMD [ "pnpm", "start" ]