Add arm32 Debian 12 helix image

src/debian/12/helix/arm32v7/Dockerfile

@@ -0,0 +1,65 @@
+FROM debian:bookworm
+
+# Install Helix Dependencies
+
+RUN apt-get update && \
+    apt-get install -y \
+        autoconf \
+        automake \
+        at \
+        build-essential \
+        curl \
+        gcc \
+        gdb \
+        git \
+        iputils-ping \
+        libcurl4 \
+        libffi-dev \
+        libgdiplus \
+        libicu-dev \
+        libssl-dev \
+        libtool \
+        libunwind8 \
+        llvm \
+        locales \
+        locales-all \
+        pkg-config \
+        python3-cryptography \
+        python3-dev \
+        python3-pip \
+        rustc \
+        software-properties-common \
+        sudo \
+        tzdata \
+        unzip \
+    && rm -rf /var/lib/apt/lists/* \
+    \
+    && localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+
+ENV LANG=en_US.utf8
+
+RUN ln -sf /usr/bin/python3 /usr/bin/python && \
+    python3 -m pip install virtualenv==20.17.1 --break-system-packages && \
+    python3 -m pip download --no-deps helix-scripts --index-url https://dnceng.pkgs.visualstudio.com/public/_packaging/helix-client-prod/pypi/simple && \
+    python3  -m pip install ./helix_scripts-*-py3-none-any.whl --break-system-packages
+
+# Add MsQuic
+RUN curl -LO https://packages.microsoft.com/keys/microsoft.asc && \
+    echo 2cfd20a306b2fa5e25522d78f2ef50a1f429d35fd30bd983e2ebffc2b80944fa microsoft.asc| sha256sum --check - && \
+    apt-key add microsoft.asc && \
+    rm microsoft.asc && \
+    echo deb https://packages.microsoft.com/debian/12/prod bookworm main >> /etc/apt/sources.list.d/microsoft.list && \
+    apt-get update && \
+    apt-get install -y libmsquic && \
+    rm -rf /var/lib/apt/lists/*
+
+# Create helixbot users and give rights to sudo without password
+# (we use two users here to ensure volume mounting works with two possible UIDs of the host UID)
+# additionally, preinstall the virtualenv packages used for VSTS reporting to save time
+RUN /usr/sbin/adduser --disabled-password --gecos '' --uid 1000 --shell /bin/bash --ingroup adm helixbot && \
+    chmod 755 /root && \
+    echo "helixbot ALL=(ALL)       NOPASSWD: ALL" > /etc/sudoers
+
+USER helixbot
+
+RUN python -m virtualenv /home/helixbot/.vsts-env

src/debian/manifest.json

@@ -90,6 +90,21 @@
             }
           ]
         },
+        {
+          "platforms": [
+            {
+              "architecture": "arm64",
+              "dockerfile": "src/debian/12/helix/arm32v7",
+              "os": "linux",
+              "osVersion": "bookworm",
+              "tags": {
+                "debian-12-helix-arm32v7-$(System:TimeStamp)-$(System:DockerfileGitCommitSha)": {},
+                "debian-12-helix-arm32v7$(FloatingTagSuffix)": {}
+              },
+              "variant": "v8"
+            }
+          ]
+        },
         {
           "platforms": [
             {