Docker: Install locales and use en_US.UTF-8 to save non-ASCII files (#683)

* Docker: Install locales and use en_US.UTF-8 to save non-ASCII files

* Release: Update changelog for new release

Author: macabu

CHANGELOG.md

@@ -1,3 +1,8 @@
+## 4.0.7 (2025-07-25)
+
+- Docker: Install locales and use en_US.UTF-8 to save non-ASCII files, [#683](https://github.com/grafana/grafana-image-renderer/pull/683), [macabu](https://github.com/macabu)
+  - This fixes #680
+
 ## 4.0.6 (2025-07-24)
 
 - Docker: Update Chromium (CVE-2025-8010, CVE-2025-8011), [#682](https://github.com/grafana/grafana-image-renderer/pull/682), [macabu](https://github.com/macabu)

Dockerfile

@@ -9,7 +9,7 @@ RUN echo 'cachebuster 2025-07-24' && apt-get update
 
 FROM debian-updated AS debs
 
-RUN apt-cache depends chromium chromium-driver chromium-shell chromium-sandbox font-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-khmeros fonts-kacst fonts-freefont-ttf libxss1 unifont fonts-open-sans fonts-roboto fonts-inter bash busybox util-linux openssl tini ca-certificates \
+RUN apt-cache depends chromium chromium-driver chromium-shell chromium-sandbox font-gothic fonts-wqy-zenhei fonts-thai-tlwg fonts-khmeros fonts-kacst fonts-freefont-ttf libxss1 unifont fonts-open-sans fonts-roboto fonts-inter bash busybox util-linux openssl tini ca-certificates locales \
     --recurse --no-recommends --no-suggests --no-conflicts --no-breaks --no-replaces --no-enhances --no-pre-depends | grep '^\w' | xargs apt-get download
 RUN mkdir /dpkg && \
     find . -type f -name '*.deb' -exec sh -c 'dpkg --extract "$1" /dpkg || exit 5' sh '{}' \;
@@ -44,13 +44,17 @@ SHELL ["/bin/busybox", "sh", "-c"]
 RUN /bin/busybox --install
 # Verify that the browser was actually installed.
 RUN /usr/bin/chromium --version
+# This is so the browser can write file names that contain non-ASCII characters.
+RUN echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && locale-gen en_US.UTF-8
 RUN fc-cache -fr
 RUN update-ca-certificates --fresh
 USER nonroot
 
 ENV CHROME_BIN="/usr/bin/chromium"
 ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD="true"
 ENV NODE_ENV=production
+ENV LANG=en_US.UTF-8
+ENV LC_ALL=en_US.UTF-8
 
 COPY --from=build /src/node_modules node_modules
 COPY --from=build /src/build build

plugin.json

@@ -24,8 +24,8 @@
         "url": "https://github.com/grafana/grafana-image-renderer/blob/master/LICENSE"
       }
     ],
-    "version": "4.0.6",
-    "updated": "2025-07-24"
+    "version": "4.0.7",
+    "updated": "2025-07-25"
   },
   "dependencies": {
     "grafanaDependency": ">=11.3.8"