fix: ensure this works properly in docker (hopefully)

Dockerfile

@@ -7,32 +7,23 @@ WORKDIR /usr/src/app
 ENV YARN_DISABLE_GIT_HOOKS=1
 ENV CI=true
 
-RUN set -ex
-
-COPY --chown=node:node package.json .
 COPY --chown=node:node yarn.lock .
+COPY --chown=node:node package.json .
 COPY --chown=node:node .yarnrc.yml .
 COPY --chown=node:node .yarn/ .yarn/
 
-COPY --chown=node:node ./concourse/check /opt/resource/check
-COPY --chown=node:node ./concourse/in /opt/resource/in
-COPY --chown=node:node ./concourse/out /opt/resource/out
-
-RUN chmod +x /opt/resource/check /opt/resource/in /opt/resource/out
-
-RUN yarn install --immutable
-
 ## Builder stage ##
 
 FROM base AS builder
 
-COPY --from=base --chown=node:node /usr/src/app/node_modules/ /usr/src/app/node_modules/
+ENV NODE_ENV="development"
 
 COPY --chown=node:node tsconfig.base.json .
 COPY --chown=node:node tsup.config.ts .
 COPY --chown=node:node src/ src/
 
-RUN yarn build
+RUN yarn install --immutable \
+    && yarn build
 
 ## Runtime stage ##
 
@@ -41,18 +32,19 @@ FROM base AS runtime
 ENV NODE_ENV="production"
 ENV NODE_OPTIONS="--enable-source-maps"
 
-# Create a directory for Concourse scripts
-RUN mkdir -p /opt/resource
-
 # Copy Concourse scripts
-COPY --from=base /opt/resource/check /opt/resource/check
-COPY --from=base /opt/resource/in /opt/resource/in
-COPY --from=base /opt/resource/out /opt/resource/out
+COPY --chown=node:node ./concourse/check /opt/resource/check
+COPY --chown=node:node ./concourse/in /opt/resource/in
+COPY --chown=node:node ./concourse/out /opt/resource/out
 
-# Copy NodeJS scripts
-COPY --from=base --chown=node:node /usr/src/app/node_modules/ /usr/src/app/node_modules/
+# Copy NodeJS ouptut
 COPY --from=builder --chown=node:node /usr/src/app/dist/ /usr/src/app/dist/
 
+RUN yarn workspaces focus --all --production \
+    && chown -R node:node /opt/resource/ \
+    && chown node:node /usr/src/app/ \
+    && chmod +x /opt/resource/check /opt/resource/in /opt/resource/out
+
 USER node
 
 CMD echo "This container is not used directly."; exit 1