feat(release): stage GitWorkshop and next node updates

docker/archipelago-source/Dockerfile

@@ -0,0 +1,36 @@
+FROM docker.io/library/node:24-alpine AS build
+
+# GitWorkshop has no release artifacts, so pin the audited source revision.
+# The fetch verifies that the exact requested commit was checked out before any
+# dependency or build command runs.
+ARG GITWORKSHOP_COMMIT=dc36db64f6a2cca29d109829eabaf0a49d4bf4da
+RUN apk add --no-cache git
+WORKDIR /src
+RUN git init \
+    && git remote add origin https://github.com/DanConwayDev/gitworkshop.git \
+    && git fetch --depth=1 origin "${GITWORKSHOP_COMMIT}" \
+    && git checkout --detach FETCH_HEAD \
+    && test "$(git rev-parse HEAD)" = "${GITWORKSHOP_COMMIT}"
+
+COPY gitworkshop-archipelago.patch /tmp/gitworkshop-archipelago.patch
+RUN git apply --check /tmp/gitworkshop-archipelago.patch \
+    && git apply /tmp/gitworkshop-archipelago.patch
+RUN npm ci
+RUN APP_BASE_PATH=/app/archipelago-source/ \
+    APP_RELEASE_VERSION="archipelago-${GITWORKSHOP_COMMIT}" \
+    npm run build
+
+FROM docker.io/library/nginx:1.27.4-alpine
+
+COPY --from=build /src/dist/ /usr/share/nginx/html/
+COPY nginx-main.conf /etc/nginx/nginx.conf
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY UPSTREAM.md /usr/share/doc/archipelago-source/UPSTREAM.md
+
+# Run both nginx master and workers as the packaged unprivileged user. Writable
+# runtime paths live on the manifest's small mode-1777 `/tmp` tmpfs, so the
+# container needs neither Linux capabilities nor a writable root filesystem.
+EXPOSE 8337
+ENTRYPOINT []
+USER nginx
+CMD ["nginx", "-g", "daemon off;"]