add (BROKEN?) NTLM support

examples/demo-container-images-shared/Dockerfile

@@ -1,18 +1,22 @@
 #FROM public.ecr.aws/lambda/provided:al2023
 ## INSTALL POWERSHELL RUNTIME
 FROM 978558897928.dkr.ecr.us-east-1.amazonaws.com/powershell-runtime:latest as runtime-files
+## Install gss-ntlmssp and related packages for NTLM authentication
+# FROM 978558897928.dkr.ecr.us-east-1.amazonaws.com/powershell-remoting-ntlm:latest as remoting-files
 ## INSTALL AWS SDK
 FROM 978558897928.dkr.ecr.us-east-1.amazonaws.com/powershell-modules-aws-tools:latest as module-files
 
 ## Build final image
 FROM public.ecr.aws/lambda/provided:al2023
 ## Copy PowerShell runtime files
 COPY --from=runtime-files . /
+## Copy NTLM auth files
+# COPY --from=remoting-files . /
 ## Copy Module files
 COPY --from=module-files . /
 ## Function files
 COPY /function/ /var/task
 ENV DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
 WORKDIR /var/task
 ENTRYPOINT  [ "/var/runtime/bootstrap" ]
-CMD [ "examplehandler.ps1::handler" ]
+CMD [ "examplehandler.ps1::handler" ]

examples/demo-container-images-shared/powershell-remoting-ntlm/Dockerfile

@@ -0,0 +1,47 @@
+# syntax=docker/dockerfile:1
+
+# This image is based on the existing powershell-runtime image.
+# Set any of the arguments as needed in case you customized the image details.
+ARG REGISTRY=<account>.dkr.ecr.<region>.amazonaws.com
+ARG RUNTIME_IMAGE=${REGISTRY}/powershell-remoting
+ARG RUNTIME_TAG=latest
+ARG RUNTIME=${RUNTIME_IMAGE}:${RUNTIME_TAG}
+
+FROM ${RUNTIME} as build
+
+WORKDIR /tmp
+
+# These build dependencies are documented here:
+# https://github.com/gssapi/gss-ntlmssp/blob/main/contrib/gssntlmssp.spec.in#L13
+RUN dnf install -y \
+    autoconf automake docbook-style-xsl doxygen findutils krb5-devel \
+    libtool libxml2 libxslt libunistring-devel m4 pkgconfig openssl-devel
+
+# These build dependencies are also needed but not in the spec file.
+# It's easier to iterate on these packages when they are in their own RUN step.
+RUN dnf install -y rpm-build gettext-devel libwbclient-devel zlib-devel
+
+# Build gssntlmssp
+RUN <<EOF
+    git clone https://github.com/gssapi/gss-ntlmssp
+    cd /tmp/gss-ntlmssp
+    autoreconf -f -i
+    ./configure
+    make rpms
+    mkdir -p /tmp/gssntlmssp
+    mv /tmp/gss-ntlmssp/rpmbuild/RPMS/x86_64/gssntlmssp-[0-9]*.x86_64.rpm /tmp/gssntlmssp/gssntlmssp.rpm
+    rm -rf /tmp/gss-ntlmssp
+EOF
+
+# Start a new build stage since we don't need all the build dependencies and intermediate build output.
+FROM ${RUNTIME} as target
+
+# Get the final RPM we built out of the build stage.
+COPY --from=build /tmp/gssntlmssp /tmp/
+
+# libwbclient is required to install the RPM, but it does not seem to declare it as a runtime dependency
+# so it won't be installed automatically.
+RUN dnf install -y libwbclient
+
+# This RPM is quite small but it brings in around 45 other packages.
+RUN rpm --install /tmp/gssntlmssp.rpm