Stirling-PDF/docker/backend/Dockerfile.ultra-lite
Ludy 3c8fb8ac96
build(ci): pin base container images, switch npm install to npm ci, and harden EML error handling (#5353)
# Description of Changes

This pull request introduces several improvements focused on security
and reliability in both the Docker build process and the backend API.
The most significant changes are the use of digest-pinned Docker base
images to ensure reproducible builds, safer handling of user-provided
filenames in error messages, and a switch to more reliable dependency
installation in CI workflows.

**Docker image security and reproducibility:**

* All Dockerfiles now use digest-pinned base images (e.g.,
`node:20-alpine@sha256:...`, `gradle:8.14-jdk21@sha256:...`,
`alpine:3.22.1@sha256:...`, `nginx:alpine@sha256:...`) to guarantee
build consistency and protect against upstream image changes.
[[1]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L5-R5)
[[2]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L18-R18)
[[3]](diffhunk://#diff-f8faae0938488156cf26e9322ffdf755deaa8770a7ac8c524dd6126c19548888L38-R38)
[[4]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L5-R5)
[[5]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L18-R18)
[[6]](diffhunk://#diff-2f5cd3ad965c86a7a5b4af6e0513ad294e0426644d9f5b5358dfb16a2ef995a7L37-R37)
[[7]](diffhunk://#diff-e9edf3a05475d0721a0e65be1ba0eeb162ae972891b0f6d7e1285687efab1de0L9-R9)
[[8]](diffhunk://#diff-fa0700cfd7d90d832649eb1d0503904564bb3b28c48972be7d9f17e4ce32a3dcL9-R9)
[[9]](diffhunk://#diff-2e766aaf0c87e7b8a62d2a2986f6999c38cc35f677479e31b77d1b427c7aeef7L5-R5)
[[10]](diffhunk://#diff-1726db0cbef194c9be3cba9825c0794802b154e15e4c892c1544d0aace03e037L5-R5)
[[11]](diffhunk://#diff-c1b6dd504a16fc68cd064baf9cf07d9dd31da56eb55de69601844ab03a5ae319L5-R5)
[[12]](diffhunk://#diff-2fc7fcfcfdbb617dd8fbb6b1a2ea5709f9018d618d13942cb33d3e0ed127df16L5-R5)
[[13]](diffhunk://#diff-2fc7fcfcfdbb617dd8fbb6b1a2ea5709f9018d618d13942cb33d3e0ed127df16L39-R39)
[[14]](diffhunk://#diff-759e94102d21fe6f9bde8ddb0b4f95b5d5cd214b0355ea0419d3ea6c09e8ffbfL2-R2)
[[15]](diffhunk://#diff-759e94102d21fe6f9bde8ddb0b4f95b5d5cd214b0355ea0419d3ea6c09e8ffbfL19-R19)

**Backend API security:**

* In `ConvertEmlToPDF.java`, error messages now escape user-provided
filenames using `HtmlUtils.htmlEscape`, preventing potential XSS
vulnerabilities when displaying error messages that include filenames.
[[1]](diffhunk://#diff-45d22a96bae3e8a746b7fb2c39e25c80aee0bf733b528a3517db8fdd2a3d25cdR13)
[[2]](diffhunk://#diff-45d22a96bae3e8a746b7fb2c39e25c80aee0bf733b528a3517db8fdd2a3d25cdR156-R170)

**CI/CD reliability:**

* All GitHub Actions workflows (`multiOSReleases.yml`,
`releaseArtifacts.yml`, `tauri-build.yml`) now use `npm ci` instead of
`npm install` for frontend dependency installation, ensuring clean,
reproducible installs that match the lockfile.
[[1]](diffhunk://#diff-895b214ee023c8c26048a2a3b946cfb1ebc4f26fbc8a9c2fa54b77c12e763b6bL271-R271)
[[2]](diffhunk://#diff-699ff98fe113446c403eb07daf16dd1966c2a047ab0b9f7e38fd695d079f7dddL177-R177)
[[3]](diffhunk://#diff-b34ab107dd4bc92075b2e89b6f16e4a2813e267ca7c2afebdb1931a0a3900d5aL177-R177)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.
2026-01-13 13:59:59 +00:00

89 lines
3.4 KiB
Docker

# Backend ultra-lite Dockerfile - Java Spring Boot with minimal dependencies and build stage
# ========================================
# STAGE 1: Build stage - Gradle
# ========================================
FROM gradle:8.14-jdk21@sha256:051d9a116793bdc5175a3f97a545718b750489eee85a7da20913c8a53f722a72 AS build
COPY build.gradle .
COPY settings.gradle .
COPY gradlew .
COPY gradle gradle/
COPY app/core/build.gradle core/.
COPY app/common/build.gradle common/.
COPY app/proprietary/build.gradle proprietary/.
RUN ./gradlew build -x spotlessApply -x spotlessCheck -x test -x sonarqube || return 0
# Set the working directory
WORKDIR /app
# Copy the entire project to the working directory
COPY . .
# Build the application with DISABLE_ADDITIONAL_FEATURES=true
RUN DISABLE_ADDITIONAL_FEATURES=true \
STIRLING_PDF_DESKTOP_UI=false \
./gradlew clean build -x spotlessApply -x spotlessCheck -x test -x sonarqube
# ========================================
# STAGE 2: Runtime stage - Alpine minimal
# ========================================
FROM alpine:3.22.2@sha256:4b7ce07002c69e8f3d704a9c5d6fd3053be500b7f1c69fc0d80990c2ad8dd412
ARG VERSION_TAG
# Set Environment Variables
ENV HOME=/home/stirlingpdfuser \
VERSION_TAG=$VERSION_TAG \
JAVA_BASE_OPTS="-XX:+ExitOnOutOfMemoryError -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/configs/heap_dumps -XX:+UnlockExperimentalVMOptions -XX:MaxRAMPercentage=75 -XX:InitiatingHeapOccupancyPercent=20 -XX:+G1PeriodicGCInvokesConcurrent -XX:G1PeriodicGCInterval=10000 -XX:+UseStringDeduplication -XX:G1PeriodicGCSystemLoadThreshold=70" \
JAVA_CUSTOM_OPTS="" \
PUID=1000 \
PGID=1000 \
UMASK=022 \
STIRLING_TEMPFILES_DIRECTORY=/tmp/stirling-pdf \
TMPDIR=/tmp/stirling-pdf \
TEMP=/tmp/stirling-pdf \
TMP=/tmp/stirling-pdf
# Copy necessary files
COPY scripts/init-without-ocr.sh /scripts/init-without-ocr.sh
COPY scripts/installFonts.sh /scripts/installFonts.sh
COPY --from=build --chown=stirlingpdfuser:stirlingpdfgroup /app/app/core/build/libs/*.jar /app.jar
COPY --from=build --chown=stirlingpdfuser:stirlingpdfgroup /app/build/libs/restart-helper.jar /restart-helper.jar
# Set up necessary directories and permissions
RUN apk add --no-cache bash \
&& ln -sf /bin/bash /bin/sh \
&& printf '%s\n' \
'https://dl-cdn.alpinelinux.org/alpine/edge/main' \
'https://dl-cdn.alpinelinux.org/alpine/edge/community' \
'https://dl-cdn.alpinelinux.org/alpine/edge/testing' \
> /etc/apk/repositories && \
apk upgrade --no-cache -a && \
apk add --no-cache \
ca-certificates \
tzdata \
tini \
bash \
curl \
shadow \
su-exec \
openjdk21-jre \
ghostscript \
fontforge && \
# User permissions
mkdir -p /configs /configs/heap_dumps /logs /customFiles /usr/share/fonts/opentype/noto /tmp/stirling-pdf /pipeline/watchedFolders /pipeline/finishedFolders && \
chmod +x /scripts/*.sh && \
addgroup -S stirlingpdfgroup && adduser -S stirlingpdfuser -G stirlingpdfgroup && \
chown -R stirlingpdfuser:stirlingpdfgroup $HOME /scripts /pipeline /configs /customFiles /pipeline /tmp/stirling-pdf && \
chown stirlingpdfuser:stirlingpdfgroup /app.jar /restart-helper.jar && \
ln -sf /bin/busybox /bin/sh
# Set environment variables
ENV ENDPOINTS_GROUPS_TO_REMOVE=CLI
EXPOSE 8080/tcp
# Run the application
ENTRYPOINT ["tini", "--", "/scripts/init-without-ocr.sh"]
CMD []