mendix · gjulivan · Jan 27, 2026 · Jan 27, 2026
diff --git a/packages/atlas-core/package.json b/packages/atlas-core/package.json
@@ -14,7 +14,8 @@
   },
   "testProject": {
     "githubUrl": "https://github.com/mendix/Atlas-Design-System",
-    "branchName": "lts/9.24"
+    "branchName": "lts/9.24",
+    "mxVersion": "9.24.0.2965"
   },
   "scripts": {
     "build:module": "ts-node ./scripts/build.ts build",

diff --git a/packages/atlas/package.json b/packages/atlas/package.json
@@ -4,7 +4,8 @@
   "description": "Mendix Atlas UI is the foundation of making beautiful apps with Mendix. For more information about the framework go to https://atlas.mendix.com.",
   "testProject": {
     "githubUrl": "https://github.com/mendix/Atlas-Design-System",
-    "branchName": "main"
+    "branchName": "main",
+    "mxVersion": "9.24.0.2965"
   },
   "scripts": {
     "build": "node ./scripts/build.js",

diff --git a/packages/atlas/scripts/e2e.playwright.js b/packages/atlas/scripts/e2e.playwright.js
@@ -14,8 +14,6 @@ main().catch(e => {
 });
 
 async function main() {
-    const mendixVersion = await getMendixVersion();
-
     try {
         execSync("docker info");
     } catch (e) {
@@ -24,6 +22,7 @@ async function main() {
 
     const packageConf = JSON.parse(await readFile("package.json"));
     const widgetVersion = packageConf?.version;
+    const mendixVersion = packageConf?.testProject?.mxVersion;
 
     // Downloading test project
     if (process.argv.includes("--update-test-project") || ls(`tests/testProject/*.mpr`).length === 0) {
@@ -79,7 +78,7 @@ async function main() {
         execSync(
             `docker run --name mxbuild -t -v ${process.cwd()}:/source ` +
                 `--rm mxbuild:${mendixVersion} bash -c "mx update-widgets --loose-version-check /source/${projectFile} && mxbuild ` +
-                `-o /tmp/automation.mda /source/${projectFile}"`,
+                `--modern-web-client --ignore-unsupported-widgets -o /tmp/automation.mda /source/${projectFile}"`,
             { stdio: "inherit" }
         );
         console.log("Bundle created and all the widgets are updated");
@@ -158,7 +157,7 @@ async function copyGitHubTestProject() {
             );
         }
         mkdir("-p", "tests/testProject");
-        await promisify(exec)(`unzip -o ${testArchivePath} -d tests/testProject`);
+        execSync(`unzip -o ${testArchivePath} -d tests/testProject`, { stdio: "inherit" });
         if (process.argv.includes("--remove-atlas-files")) {
             rm(
                 "-rf",

diff --git a/packages/atlas/scripts/m2ee.yml b/packages/atlas/scripts/m2ee.yml
@@ -6,7 +6,7 @@ m2ee:
   admin_pass: Password1!
   runtime_port: 8080
   runtime_listen_addresses: "*"
-  javaopts: ["-Dfile.encoding=UTF-8", "-XX:MaxPermSize=128M", "-Xmx512M", "-Xms512M", "-Djava.io.tmpdir=/source/tests/testProject/deployment/data/tmp"]
+  javaopts: ["-Dfile.encoding=UTF-8", "-Xmx512M", "-Xms512M", "-Djava.io.tmpdir=/source/tests/testProject/deployment/data/tmp"]
   javabin: /usr/bin/java
   pidfile: /var/run/m2ee.pid
 mxruntime:

diff --git a/packages/atlas/scripts/mxbuild.Dockerfile b/packages/atlas/scripts/mxbuild.Dockerfile
@@ -1,28 +1,37 @@
-FROM mcr.microsoft.com/dotnet/runtime:6.0
+FROM --platform=$BUILDPLATFORM eclipse-temurin:21-jdk-jammy
 ARG MENDIX_VERSION
+ARG BUILDPLATFORM
 
+SHELL ["/bin/bash", "-c"]
 RUN \
-    echo "Installing Java..." && \
-    apt-get -qq update && \
-    apt-get -qq install -y wget libgdiplus && \
-    wget -q https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz -O /tmp/openjdk.tar.gz && \
-    mkdir /usr/lib/jvm && \
-    tar xfz /tmp/openjdk.tar.gz --directory /usr/lib/jvm && \
-    rm /tmp/openjdk.tar.gz && \
+echo "Downloading mxbuild ${MENDIX_VERSION} and docker building for ${BUILDPLATFORM}..." \
+    && case "${BUILDPLATFORM}" in \
+        linux/arm64) \
+            BINARY_URL="https://cdn.mendix.com/runtime/arm64-mxbuild-${MENDIX_VERSION}.tar.gz"; \
+            ;; \
+        linux/amd64) \
+            BINARY_URL="https://cdn.mendix.com/runtime/mxbuild-${MENDIX_VERSION}.tar.gz"; \
+            ;; \
+        *) \
+            echo "Unsupported architecture: ${BUILDPLATFORM}" >&2; \
+            exit 1; \
+            ;; \
+    esac \
+    && echo "Downloading from: ${BINARY_URL}" \
+    && wget -q "${BINARY_URL}" -O /tmp/mxbuild.tar.gz \
+    && mkdir /tmp/mxbuild \
+    && tar xfz /tmp/mxbuild.tar.gz --directory /tmp/mxbuild \
+    && rm /tmp/mxbuild.tar.gz && \
 \
-    echo "Downloading mxbuild ${MENDIX_VERSION}..." && \
-    wget -q https://cdn.mendix.com/runtime/mxbuild-${MENDIX_VERSION}.tar.gz -O /tmp/mxbuild.tar.gz && \
-    mkdir /tmp/mxbuild && \
-    tar xfz /tmp/mxbuild.tar.gz --directory /tmp/mxbuild && \
-    rm /tmp/mxbuild.tar.gz && \
-\
-    apt-get -qq remove -y wget && \
+    apt-get update -qqy && \
+    apt-get install -qqy libicu70 libgdiplus && \
+    apt-get -qqy remove --auto-remove wget && \
     apt-get clean && \
 \
     echo "#!/bin/bash -x" >/bin/mxbuild && \
-    echo "dotnet /tmp/mxbuild/modeler/mxbuild.dll --java-home=/usr/lib/jvm/jdk-11.0.2 --java-exe-path=/usr/lib/jvm/jdk-11.0.2/bin/java \$@" >>/bin/mxbuild && \
+    echo "/tmp/mxbuild/modeler/mxbuild --java-home=/opt/java/openjdk --java-exe-path=/opt/java/openjdk/bin/java \$@" >>/bin/mxbuild && \
     chmod +x /bin/mxbuild && \
 \
     echo "#!/bin/bash -x" >/bin/mx && \
-    echo "dotnet /tmp/mxbuild/modeler/mx.dll \$@" >>/bin/mx && \
-    chmod +x /bin/mx
+    echo "/tmp/mxbuild/modeler/mx \$@" >>/bin/mx && \
+    chmod +x /bin/mx
diff --git a/packages/atlas/scripts/runtime.Dockerfile b/packages/atlas/scripts/runtime.Dockerfile
@@ -1,4 +1,4 @@
-FROM adoptopenjdk/openjdk11:jdk-11.0.19_7-slim
+FROM eclipse-temurin:21-jdk-jammy
 
 ARG MENDIX_VERSION
 

diff --git a/scripts/mxbuild.Dockerfile b/scripts/mxbuild.Dockerfile
@@ -1,28 +1,37 @@
-FROM mono:6.12
+FROM --platform=$BUILDPLATFORM eclipse-temurin:17-jdk-jammy
 ARG MENDIX_VERSION
+ARG BUILDPLATFORM
 
+SHELL ["/bin/bash", "-c"]
 RUN \
-    echo "Installing Java..." && \
-    apt-get -qq update && \
-    apt-get -qq install -y wget && \
-    wget -q https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_linux-x64_bin.tar.gz -O /tmp/openjdk.tar.gz && \
-    mkdir /usr/lib/jvm && \
-    tar xfz /tmp/openjdk.tar.gz --directory /usr/lib/jvm && \
-    rm /tmp/openjdk.tar.gz && \
+echo "Downloading mxbuild ${MENDIX_VERSION} and docker building for ${BUILDPLATFORM}..." \
+    && case "${BUILDPLATFORM}" in \
+        linux/arm64) \
+            BINARY_URL="https://cdn.mendix.com/runtime/arm64-mxbuild-${MENDIX_VERSION}.tar.gz"; \
+            ;; \
+        linux/amd64) \
+            BINARY_URL="https://cdn.mendix.com/runtime/mxbuild-${MENDIX_VERSION}.tar.gz"; \
+            ;; \
+        *) \
+            echo "Unsupported architecture: ${BUILDPLATFORM}" >&2; \
+            exit 1; \
+            ;; \
+    esac \
+    && echo "Downloading from: ${BINARY_URL}" \
+    && wget -q "${BINARY_URL}" -O /tmp/mxbuild.tar.gz \
+    && mkdir /tmp/mxbuild \
+    && tar xfz /tmp/mxbuild.tar.gz --directory /tmp/mxbuild \
+    && rm /tmp/mxbuild.tar.gz && \
 \
-    echo "Downloading mxbuild ${MENDIX_VERSION}..." && \
-    wget -q https://cdn.mendix.com/runtime/mxbuild-${MENDIX_VERSION}.tar.gz -O /tmp/mxbuild.tar.gz && \
-    mkdir /tmp/mxbuild && \
-    tar xfz /tmp/mxbuild.tar.gz --directory /tmp/mxbuild && \
-    rm /tmp/mxbuild.tar.gz && \
-\
-    apt-get -qq remove -y wget && \
+    apt-get update -qqy && \
+    apt-get install -qqy libicu70 libgdiplus && \
+    apt-get -qqy remove --auto-remove wget && \
     apt-get clean && \
 \
     echo "#!/bin/bash -x" >/bin/mxbuild && \
-    echo "mono /tmp/mxbuild/modeler/mxbuild.exe --java-home=/usr/lib/jvm/jdk-11.0.2 --java-exe-path=/usr/lib/jvm/jdk-11.0.2/bin/java \$@" >>/bin/mxbuild && \
+    echo "/tmp/mxbuild/modeler/mxbuild --java-home=/opt/java/openjdk --java-exe-path=/opt/java/openjdk/bin/java \$@" >>/bin/mxbuild && \
     chmod +x /bin/mxbuild && \
 \
     echo "#!/bin/bash -x" >/bin/mx && \
-    echo "mono /tmp/mxbuild/modeler/mx.exe \$@" >>/bin/mx && \
+    echo "/tmp/mxbuild/modeler/mx \$@" >>/bin/mx && \
     chmod +x /bin/mx
diff --git a/scripts/release/gh-release-atlas-core.js b/scripts/release/gh-release-atlas-core.js
@@ -46,7 +46,7 @@ module.exports = async function createAtlasCoreModule() {
             `No unreleased changes found in the CHANGELOG.md for ${moduleInfo.nameWithSpace} ${moduleInfo.version}.`
         );
     }
-    await commitAndCreatePullRequest(moduleInfo);
+    const targetBranchName = await commitAndCreatePullRequest(moduleInfo);
     await updateTestProject(moduleInfo, testProject, tmp);
 
     const mpkOutput = await createMPK(testProject, moduleInfo, regex.excludeFiles);
@@ -57,7 +57,8 @@ module.exports = async function createAtlasCoreModule() {
         title: `${moduleInfo.nameWithSpace} - Marketplace Release v${moduleInfo.version}`,
         body: moduleChangelogs.replace(/"/g, "'"),
         tag: `${moduleFolderNameInRepo}-v${moduleInfo.version}`,
-        mpkOutput,
+        target: targetBranchName,
+        filesToRelease: mpkOutput,
         isDraft: true
     });
 

diff --git a/scripts/release/gh-release-atlas-native.js b/scripts/release/gh-release-atlas-native.js
@@ -10,7 +10,7 @@ const {
     githubAuthentication,
     cloneRepo,
     createMPK,
-    createGithubRelease,
+    createGithubReleaseFrom,
     regex
 } = require("./module-automation/commons");
 
@@ -29,12 +29,19 @@ module.exports = async function createAtlasNativeContentModule() {
     };
     await githubAuthentication(moduleInfo);
     const moduleChangelogs = await updateModuleChangelogs(moduleInfo);
-    await commitAndCreatePullRequest(moduleInfo);
+    const targetBranchName = await commitAndCreatePullRequest(moduleInfo);
     await updateNativeComponentsTestProjectWithAtlas(moduleInfo, tmpFolder);
     const mpkOutput = await createMPK(tmpFolder, moduleInfo, regex.excludeFiles);
     console.log(`Change owner and group after module export...`);
     execSync(`sudo chown -R runner:docker ${tmpFolder}`, { stdio: "inherit" });
-    await createGithubRelease(moduleInfo, moduleChangelogs, mpkOutput);
+    console.log(`Creating Github release for module ${moduleInfo.nameWithSpace}`);
+    await createGithubReleaseFrom({
+        title: `${moduleInfo.nameWithSpace} ${moduleInfo.version} - Mendix ${moduleInfo.minimumMXVersion}`,
+        body: moduleChangelogs,
+        target: targetBranchName,
+        tag: process.env.TAG,
+        filesToRelease: mpkOutput
+    });
     await execShellCommand(`rm -rf ${tmpFolder}`);
     console.log("Done.");
 };
@@ -49,7 +56,7 @@ async function updateNativeComponentsTestProjectWithAtlas(moduleInfo, tmpFolder)
     const tmpFolderNativeStyles = join(tmpFolder, `themesource/${moduleInfo.moduleFolderNameInModeler}`);
 
     console.log("Updating NativeComponentsTestProject..");
-    await cloneRepo(moduleInfo.testProjectUrl, testProject, moduleInfo.testProjectBranchName);
+    await cloneRepo(moduleInfo.testProjectUrl, tmpFolder, moduleInfo.testProjectBranchName);
 
     console.log("Copying Native styling files..");
     await Promise.all([

diff --git a/scripts/release/gh-release-atlas-web-content.js b/scripts/release/gh-release-atlas-web-content.js
@@ -56,7 +56,7 @@ module.exports = async function createAtlasWebContentModule() {
             `No unreleased changes found in the CHANGELOG.md for ${moduleInfo.nameWithSpace} ${moduleInfo.version}.`
         );
     }
-    await commitAndCreatePullRequest(moduleInfo);
+    const targetBranchName = await commitAndCreatePullRequest(moduleInfo);
     await updateTestProject(moduleInfo, testProject, tmp);
     const mpkOutput = await createMPK(testProject, moduleInfo, regex.excludeFiles);
     console.log(`Change owner and group after module export...`);
@@ -66,7 +66,8 @@ module.exports = async function createAtlasWebContentModule() {
         title: `${moduleInfo.nameWithSpace} - Marketplace Release v${moduleInfo.version}`,
         body: moduleChangelogs.replace(/"/g, "'"),
         tag: `${moduleFolderNameInRepo}-v${moduleInfo.version}`,
-        mpkOutput,
+        target: targetBranchName,
+        filesToRelease: mpkOutput,
         isDraft: true
     });
 

diff --git a/scripts/release/module-automation/commons.js b/scripts/release/module-automation/commons.js
@@ -58,6 +58,7 @@ async function getPackageInfo(path) {
             url: repository?.url,
             testProjectUrl: testProject?.githubUrl,
             testProjectBranchName: testProject?.branchName,
+            testProjectMxVersion: testProject?.mxVersion,
             changelogPath: `${path}/CHANGELOG.md`
         };
     } catch (error) {
@@ -80,12 +81,21 @@ async function createModuleMpkInDocker(sourceDir, moduleName, mendixVersion, exc
 
     // Build testProject via mxbuild
     const projectFile = basename((await getFiles(sourceDir, [`.mpr`]))[0]);
-    await execShellCommand(
-        `docker run -t -v ${sourceDir}:/source ` +
-            `--rm mxbuild:${mendixVersion} bash -c "mx update-widgets --loose-version-check /source/${projectFile} && mono /tmp/mxbuild/modeler/mxutil.exe create-module-package ${
-                excludeFilesRegExp ? `--exclude-files='${excludeFilesRegExp}'` : ""
-            } /source/${projectFile} ${moduleName}"`
-    );
+
+    const args = [
+        // update widgets
+        "mx",
+        "update-widgets",
+        "--loose-version-check",
+        `/source/${projectFile}`,
+        "&&",
+        "/tmp/mxbuild/modeler/mxutil create-module-package",
+        excludeFilesRegExp ? `--exclude-files='${excludeFilesRegExp}'` : "",
+        `/source/${projectFile}`,
+        moduleName
+    ].join(" ");
+
+    await execShellCommand(`docker run -v ${sourceDir}:/source --rm mxbuild:${mendixVersion} bash -c "${args}"`);
     console.log(`Module ${moduleName} created successfully.`);
 }
 
@@ -169,6 +179,8 @@ async function commitAndCreatePullRequest(moduleInfo) {
         `gh pr create --title "${moduleInfo.nameWithSpace}: Updating changelogs" --body "This is an automated PR." --base main --head ${changelogBranchName}`
     );
     console.log("Created PR for changelog updates.");
+
+    return changelogBranchName;
 }
 
 async function updateWidgetChangelogs(widgetsFolders) {
@@ -232,30 +244,24 @@ async function createMPK(tmpFolder, moduleInfo, excludeFilesRegExp) {
     await createModuleMpkInDocker(
         tmpFolder,
         moduleInfo.moduleNameInModeler,
-        moduleInfo.minimumMXVersion,
+        moduleInfo.testProjectMxVersion,
         excludeFilesRegExp
     );
     return (await getFiles(tmpFolder, [`.mpk`]))[0];
 }
 
-async function createGithubRelease(moduleInfo, moduleChangelogs, mpkOutput) {
-    console.log(`Creating Github release for module ${moduleInfo.nameWithSpace}`);
-    await createGithubReleaseFrom({
-        title: `${moduleInfo.nameWithSpace} ${moduleInfo.version} - Mendix ${moduleInfo.minimumMXVersion}`,
-        body: moduleChangelogs,
-        tag: process.env.TAG,
-        mpkOutput
-    });
-}
+async function createGithubReleaseFrom(params) {
+    const { body, title, tag, filesToRelease = "", target, isDraft = false, repo } = params;
 
-async function createGithubReleaseFrom({ title, body, tag, mpkOutput, isDraft = false }) {
     const command = [
         `gh release create`,
         `--title '${title}'`,
         `--notes '${body}'`,
         isDraft ? "--draft" : "",
+        repo ? `-R '${repo}'` : "",
         `'${tag}'`,
-        `'${mpkOutput}'`
+        `--target '${target}'`,
+        filesToRelease ? `'${filesToRelease}'` : ""
     ]
         .filter(str => str !== "")
         .join(" ");
@@ -268,7 +274,8 @@ function zip(src, fileName) {
 }
 
 function unzip(src, dest) {
-    return execShellCommand(`unzip "${src}" -d "${dest}"`);
+    console.log(`unzip ${src} to ${dest}`);
+    return execShellCommand(`unzip -qq "${src}" -d "${dest}"`);
 }
 
 // Unzip the module, copy the widget and update package.xml
@@ -329,7 +336,6 @@ module.exports = {
     updateChangelogs,
     cloneRepo,
     createMPK,
-    createGithubRelease,
     createGithubReleaseFrom,
     writeToWidgetChangelogs,
     zip,