diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce1c98f..a7816d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## v1.1.0 Under Development
 
 - Enh #32 Update to PHP `8.5` (@terabytesoftw)
+- Bug #33 Build `sqlsrv/pdo_sqlsrv` in full image on PHP `8.5` using `BuildKit-mounted` scripts (@terabytesoftw)
 
 ## v1.0.0 September 13, 2025
 
diff --git a/src/flavor/apache/Dockerfile b/src/flavor/apache/Dockerfile
index 5d05980..6141254 100644
--- a/src/flavor/apache/Dockerfile
+++ b/src/flavor/apache/Dockerfile
@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1.7
 #==============================================================================
 # Yii2 Docker - Debian Trixie + PHP 8.5 FPM + Apache with HTTP/2
 # Supports: full (testing), dev (development), prod (production)
@@ -167,8 +168,6 @@ RUN install-php-extensions \
 #------------------------------------------------------------------------------
 FROM dev AS full
 
-SHELL ["/bin/bash", "-o", "pipefail", "-c"]
-
 # Layer 07: Full extensions
 RUN install-php-extensions \
     oci8 \
@@ -177,41 +176,8 @@ RUN install-php-extensions \
 
 # Layer 08: Microsoft SQL Server support
 # Note: Using Debian 12 (bookworm) repo since Trixie (13) is not yet officially supported by Microsoft
-# hadolint ignore=DL3003,SC2153
-RUN set -ex \
-    && apt-get update \
-    && apt-get install -y --no-install-recommends \
-        curl \
-        gnupg \
-        ca-certificates \
-    && curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor -o /usr/share/keyrings/microsoft-prod.gpg \
-    && echo 'deb [arch=amd64,arm64 signed-by=/usr/share/keyrings/microsoft-prod.gpg] https://packages.microsoft.com/debian/12/prod bookworm main' > /etc/apt/sources.list.d/mssql-release.list \
-    && apt-get update \
-    && ACCEPT_EULA=Y apt-get install -y --no-install-recommends msodbcsql18 \
-    && read -r -a phpize_deps <<< "${PHPIZE_DEPS}" \
-    && apt-get install -y --no-install-recommends unixodbc unixodbc-dev "${phpize_deps[@]}" \
-    && printf '\\n' | pecl install sqlsrv-5.12.0 \
-    && PHP_VERSION_ID="$(php -r 'echo PHP_VERSION_ID;')" \
-    && if [[ "${PHP_VERSION_ID}" -ge 80500 ]]; then \
-        cd /tmp \
-        && pecl download pdo_sqlsrv-5.12.0 \
-        && tar -xf pdo_sqlsrv-5.12.0.tgz \
-        && rm -f pdo_sqlsrv-5.12.0.tgz \
-        && cd pdo_sqlsrv-5.12.0 \
-        && sed -i 's/= dbh->error_mode/= (enum pdo_error_mode) dbh->error_mode/' pdo_dbh.cpp \
-        && sed -i 's/zval_ptr_dtor( &dbh->query_stmt_zval );/OBJ_RELEASE(dbh->query_stmt_obj);dbh->query_stmt_obj=NULL;/' php_pdo_sqlsrv_int.h \
-        && phpize \
-        && ./configure --with-php-config="$(command -v php-config)" \
-        && make -j"$(nproc)" \
-        && make install \
-        && rm -rf /tmp/pdo_sqlsrv-5.12.0; \
-    else \
-        printf '\\n' | pecl install pdo_sqlsrv-5.12.0; \
-    fi \
-    && docker-php-ext-enable sqlsrv pdo_sqlsrv \
-    && apt-get purge -y --auto-remove gnupg unixodbc-dev "${phpize_deps[@]}" \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+RUN --mount=type=bind,source=src/script/build,target=/opt/build,ro \
+    /bin/bash /opt/build/10-mssql-php-ext.sh
 
 #==============================================================================
 # Production Build
diff --git a/src/script/build/01-mssql-odbc.sh b/src/script/build/01-mssql-odbc.sh
new file mode 100755
index 0000000..d2dfdca
--- /dev/null
+++ b/src/script/build/01-mssql-odbc.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+set -euo pipefail
+
+mssql_add_apt_repo() {
+    apt-get update
+    apt-get install -y --no-install-recommends ca-certificates curl gnupg
+
+    curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor -o /usr/share/keyrings/microsoft-prod.gpg
+    echo 'deb [arch=amd64,arm64 signed-by=/usr/share/keyrings/microsoft-prod.gpg] https://packages.microsoft.com/debian/12/prod bookworm main' >/etc/apt/sources.list.d/mssql-release.list
+}
+
+mssql_install_odbc_runtime() {
+    apt-get update
+    ACCEPT_EULA=Y apt-get install -y --no-install-recommends msodbcsql18 unixodbc
+}
diff --git a/src/script/build/10-mssql-php-ext.sh b/src/script/build/10-mssql-php-ext.sh
new file mode 100755
index 0000000..a6d3603
--- /dev/null
+++ b/src/script/build/10-mssql-php-ext.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "${SCRIPT_DIR}/01-mssql-odbc.sh"
+
+main() {
+    mssql_add_apt_repo
+    mssql_install_odbc_runtime
+
+    read -r -a phpize_deps <<<"${PHPIZE_DEPS:-}"
+    apt-get install -y --no-install-recommends unixodbc-dev "${phpize_deps[@]}"
+
+    printf '\n' | pecl install sqlsrv-5.12.0
+
+    local php_version_id
+    php_version_id="$(php -r 'echo PHP_VERSION_ID;')"
+
+    if [[ "${php_version_id}" -ge 80500 ]]; then
+        cd /tmp
+        pecl download pdo_sqlsrv-5.12.0
+        tar -xf pdo_sqlsrv-5.12.0.tgz
+        rm -f pdo_sqlsrv-5.12.0.tgz
+
+        cd pdo_sqlsrv-5.12.0
+
+        sed -i 's/= dbh->error_mode/= (enum pdo_error_mode) dbh->error_mode/' pdo_dbh.cpp
+        sed -i 's/zval_ptr_dtor( &dbh->query_stmt_zval );/OBJ_RELEASE(dbh->query_stmt_obj);dbh->query_stmt_obj=NULL;/' php_pdo_sqlsrv_int.h
+
+        phpize
+        ./configure --with-php-config="$(command -v php-config)"
+        make -j"$(nproc)"
+        make install
+        rm -rf /tmp/pdo_sqlsrv-5.12.0
+    else
+        printf '\n' | pecl install pdo_sqlsrv-5.12.0
+    fi
+
+    docker-php-ext-enable sqlsrv pdo_sqlsrv
+
+    apt-get purge -y --auto-remove gnupg unixodbc-dev "${phpize_deps[@]}"
+    apt-get clean
+    rm -rf /var/lib/apt/lists/* /tmp/pear /tmp/* /var/tmp/*
+}
+
+main "$@"