ci(docker): add experimental specifier resolution

Dockerfile

@@ -110,6 +110,8 @@ RUN npm install -g pnpm && \
 # Could be the specific version of `node:alpine`, but the `prepare` stage uses slim too.
 FROM node:18.6.0-slim@sha256:dc51bdd082f355574f0c534ffa1c0d5fcdb825ed673da6486ecd566091b8d8f0 AS test-integration
 
+ENV NODE_OPTIONS=--experimental-specifier-resolution=node
+
 # Update and install dependencies.
 # - `wget` is used for testing
 # - `procps` is required by `start-server-and-test` on `debian:slim` (https://github.com/bahmutov/start-server-and-test/issues/132#issuecomment-448581335)
@@ -205,6 +207,7 @@ COPY --from=test-visual /srv/app/package.json /tmp/test-visual/package.json
 FROM node:18.6.0-slim@sha256:dc51bdd082f355574f0c534ffa1c0d5fcdb825ed673da6486ecd566091b8d8f0 AS production
 
 ENV NODE_ENV=production
+ENV NODE_OPTIONS=--experimental-specifier-resolution=node
 
 # Update and install dependencies.
 # - `libdbd-pg-perl postgresql-client sqitch` is required by the entrypoint