Fixes for sleep

Author: simonkurtz-MSFT

.devcontainer/Dockerfile

@@ -16,24 +16,24 @@ ENV PYTHONUNBUFFERED=1 \
     PYTHONPATH=/workspaces/Apim-Samples/shared/python:/workspaces/Apim-Samples \
     DEBIAN_FRONTEND=noninteractive
 
-# Install system dependencies as root with optimized caching
+# Install system dependencies as root with explicit core utilities
 USER root
-RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
-    --mount=type=cache,target=/var/lib/apt/lists,sharing=locked \
-    # Remove Python 3.11 and other versions if they exist
-    apt-get update && \
-    apt-get remove -y python3.11* python3-minimal python3.11-minimal || true && \
-    apt-get autoremove -y && \
-    # Install essential packages including core utilities
+RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         coreutils \
         util-linux \
+        findutils \
+        grep \
+        sed \
         curl \
         wget \
         jq \
         tree \
         git-lfs && \
     apt-get clean && \
+    rm -rf /var/lib/apt/lists/* && \
+    # Verify core utilities are installed
+    which sleep && which cat && which grep && \
     # Create symbolic links to ensure python3 points to Python 3.12
     ln -sf /usr/local/bin/python3.12 /usr/bin/python3 && \
     ln -sf /usr/local/bin/python3.12 /usr/bin/python && \

.devcontainer/Dockerfile.minimal

@@ -0,0 +1,63 @@
+# Minimal bulletproof Dockerfile for troubleshooting
+FROM ubuntu:22.04
+
+# Set environment variables
+ENV DEBIAN_FRONTEND=noninteractive \
+    PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONPATH=/workspaces/Apim-Samples/shared/python:/workspaces/Apim-Samples
+
+# Install everything we need in one layer
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        # Core utilities (should already be in ubuntu, but just in case)
+        coreutils \
+        util-linux \
+        findutils \
+        grep \
+        sed \
+        curl \
+        wget \
+        jq \
+        tree \
+        git \
+        git-lfs \
+        # Python and dev tools
+        python3.12 \
+        python3.12-dev \
+        python3.12-venv \
+        python3-pip \
+        # Additional utilities
+        sudo \
+        openssh-client \
+        gnupg \
+        lsb-release \
+        ca-certificates && \
+    # Clean up
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* && \
+    # Create vscode user
+    groupadd --gid 1000 vscode && \
+    useradd --uid 1000 --gid vscode --shell /bin/bash --create-home vscode && \
+    echo "vscode ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers && \
+    # Set up Python
+    ln -sf /usr/bin/python3.12 /usr/bin/python3 && \
+    ln -sf /usr/bin/python3.12 /usr/bin/python && \
+    python3 -m pip install --upgrade pip setuptools wheel && \
+    # Verify core commands work
+    which sleep && sleep 1 && echo "Sleep test passed" && \
+    which cat && echo "test" | cat && echo "Cat test passed" && \
+    which grep && echo "test" | grep "test" && echo "Grep test passed"
+
+# Install Azure CLI
+RUN curl -sL https://aka.ms/InstallAzureCLIDeb | bash && \
+    az config set core.login_experience_v2=off 2>/dev/null || true
+
+# Switch to vscode user
+USER vscode
+WORKDIR /workspaces/Apim-Samples
+
+# Final verification
+RUN echo "Container setup complete!" && \
+    python3 --version && \
+    az --version | head -n 3

.devcontainer/post-start-setup.sh

@@ -92,3 +92,31 @@ echo "   1. Log in via the Azure CLI: az login"
 echo "   2. Start using the infrastructures and samples!"
 echo ""
 echo "============================================================================"
+
+# ------------------------------
+#    CORE UTILITIES VERIFICATION
+# ------------------------------
+
+echo "Core Utilities Status:"
+
+# Test essential commands that should always be available
+if command -v sleep >/dev/null 2>&1; then
+    echo "   ✅ sleep command"
+else
+    echo "   ❌ sleep command missing - installing..."
+    sudo apt-get update >/dev/null 2>&1 && sudo apt-get install -y coreutils >/dev/null 2>&1
+fi
+
+if command -v cat >/dev/null 2>&1; then
+    echo "   ✅ cat command"
+else
+    echo "   ❌ cat command missing"
+fi
+
+if command -v grep >/dev/null 2>&1; then
+    echo "   ✅ grep command"
+else
+    echo "   ❌ grep command missing"
+fi
+
+echo ""