diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 413a0f82108..326146e4450 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -39,13 +39,6 @@ RUN chmod +x /usr/local/bin/xdg-open-wrapper.sh && \
 RUN echo "${USERNAME} ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/devcontaineruser && \
     chmod 0440 /etc/sudoers.d/devcontaineruser
 
-# Persistent bash history
-RUN SNIPPET="export PROMPT_COMMAND='history -a' && export HISTFILE=/commandhistory/.bash_history" \
-  && mkdir /commandhistory \
-  && touch /commandhistory/.bash_history \
-  && chown -R $USERNAME /commandhistory \
-  && echo "$SNIPPET" >> "/home/$USERNAME/.bashrc"
-
 # Toolchain installation with SHA256 verification
 # Run "python3 toolchain.py generate" to update toolchain_config.env
 ARG TARGETPLATFORM
@@ -80,35 +73,41 @@ USER $USERNAME
 ENV USER=${USERNAME}
 RUN /opt/mongodbtoolchain/revisions/*/scripts/install.sh; echo "Toolchain installation complete"
 
-# Add MongoDB toolchain to PATH
-ENV PATH="/opt/mongodbtoolchain/v5/bin:${PATH}"
-
-# Setup bash profile to source .bashrc
-RUN echo "" >> "$HOME/.bash_profile" && \
-  echo "# BEGIN Source .bashrc" >> "$HOME/.bash_profile" && \
-  echo "if [[ -f ~/.bashrc ]]; then" >> "$HOME/.bash_profile" && \
-  echo "    source ~/.bashrc" >> "$HOME/.bash_profile" && \
-  echo "fi" >> "$HOME/.bash_profile" && \
-  echo "# END Source .bashrc" >> "$HOME/.bash_profile"
+# Add MongoDB toolchain to PATH via system-wide profile
+USER root
+RUN echo 'export PATH="/opt/mongodbtoolchain/v5/bin:${PATH}"' > /etc/profile.d/02-mongodbtoolchain.sh \
+  && chmod +x /etc/profile.d/02-mongodbtoolchain.sh
+USER $USERNAME
 
 # Create MongoDB data directory
 USER root
 RUN mkdir -p /data/db && chown -R ${USERNAME}:${USERNAME} /data/db
 USER $USERNAME
 
-# Bazel telemetry
-RUN echo "common --bes_keywords=devcontainer:use=true" >> "$HOME/.bazelrc" && \
-  echo "common --bes_keywords=devcontainer:image=$BASE_IMAGE" >> "$HOME/.bazelrc" && \
-  echo "common --bes_keywords=devcontainer:username=$USERNAME" >> "$HOME/.bazelrc"
+# Bazel telemetry - configure system-wide defaults
+# These will be imported by user's .bazelrc in post-create script
+USER root
+RUN mkdir -p /etc/devcontainer && \
+  echo "# MongoDB Devcontainer Bazel Configuration" > /etc/devcontainer/bazelrc && \
+  echo "common --bes_keywords=devcontainer:use=true" >> /etc/devcontainer/bazelrc && \
+  echo "common --bes_keywords=devcontainer:image=$BASE_IMAGE" >> /etc/devcontainer/bazelrc && \
+  chmod 644 /etc/devcontainer/bazelrc
+USER $USERNAME
 
 # Install pipx (Python package manager for tools)
+# Add ~/.local/bin to PATH for pipx-installed tools
+USER root
+RUN echo 'export PATH="$HOME/.local/bin:${PATH}"' > /etc/profile.d/03-local-bin.sh \
+  && chmod +x /etc/profile.d/03-local-bin.sh
+USER $USERNAME
+
 ENV PATH="/home/${USERNAME}/.local/bin:${PATH}"
 RUN /opt/mongodbtoolchain/v5/bin/python3 -m venv /tmp/pipx-venv && \
   /tmp/pipx-venv/bin/python -m pip install --upgrade "pip<20.3" && \
   /tmp/pipx-venv/bin/python -m pip install pipx && \
   /tmp/pipx-venv/bin/pipx install pipx --python /opt/mongodbtoolchain/v5/bin/python3 --force && \
-  /tmp/pipx-venv/bin/pipx ensurepath --force && \
   rm -rf /tmp/pipx-venv
+# Note: PATH is configured via /etc/profile.d, not ~/.bashrc, to avoid modifying home volume
 
 # Install db-contrib-tool using pipx
 RUN /home/${USERNAME}/.local/bin/pipx install db-contrib-tool
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 26545ff0b31..d1e1d54ec03 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -11,6 +11,11 @@
     }
   },
   "mounts": [
+    {
+      "source": "mongo-dev-home",
+      "target": "/home",
+      "type": "volume"
+    },
     {
       "source": "engflow_auth",
       "target": "/home/${localEnv:USER}/.config/engflow_auth",
@@ -21,15 +26,16 @@
       "target": "/home/${localEnv:USER}/.cache",
       "type": "volume"
     },
-    {
-      "source": "mongo-bashhistory",
-      "target": "/commandhistory",
-      "type": "volume"
-    },
     {
       "source": "${containerWorkspaceFolderBasename}-python3-venv",
       "target": "${containerWorkspaceFolder}/python3-venv",
       "type": "volume"
+    },
+    {
+      "source": "${localEnv:HOME}/.ssh",
+      "target": "/home/${localEnv:USER}/.ssh",
+      "type": "bind",
+      "readonly": true
     }
   ],
   "containerEnv": {
diff --git a/.devcontainer/post-create.sh b/.devcontainer/post-create.sh
index 64c1a23934c..40b9585e67a 100755
--- a/.devcontainer/post-create.sh
+++ b/.devcontainer/post-create.sh
@@ -8,10 +8,28 @@ set -euo pipefail
 
 echo "Starting MongoDB development container post-create setup..."
 
-# Step 1: Fix volume permissions
+# Setup user's .bazelrc to import system-wide devcontainer config
+echo "Setting up Bazel configuration..."
+if [ -f "/etc/devcontainer/bazelrc" ]; then
+    if [ ! -f "${HOME}/.bazelrc" ]; then
+        # Create new .bazelrc with import
+        echo "# Import devcontainer system configuration" >"${HOME}/.bazelrc"
+        echo "try-import /etc/devcontainer/bazelrc" >>"${HOME}/.bazelrc"
+        echo "[OK] Created .bazelrc with system config import"
+    elif ! grep -q "try-import /etc/devcontainer/bazelrc" "${HOME}/.bazelrc" 2>/dev/null; then
+        # Add import to existing .bazelrc
+        echo "" >>"${HOME}/.bazelrc"
+        echo "# Import devcontainer system configuration" >>"${HOME}/.bazelrc"
+        echo "try-import /etc/devcontainer/bazelrc" >>"${HOME}/.bazelrc"
+        echo "[OK] Added system config import to existing .bazelrc"
+    else
+        echo "Info: .bazelrc already imports system config"
+    fi
+fi
+
+# Fix volume permissions
 echo "Fixing volume permissions..."
-sudo chown -R "$(whoami)": "${HOME}/.config/engflow_auth" || echo "Warning: Could not fix engflow_auth permissions"
-sudo chown -R "$(whoami)": "${HOME}/.cache" || echo "Warning: Could not fix cache permissions"
+sudo chown -R "$(whoami)": "${HOME}" || echo "Warning: Could not fix home directory permissions"
 sudo chown -R "$(whoami)": "${WORKSPACE_FOLDER}/python3-venv" || echo "Warning: Could not fix python3-venv permissions"
 sudo chown "$(whoami)": "${WORKSPACE_FOLDER}/.." || echo "Warning: Could not fix parent directory permissions"
 
@@ -28,7 +46,7 @@ echo "Configuring git safe.directory..."
 git config --global --add safe.directory "${WORKSPACE_FOLDER}" || echo "Warning: Could not configure git safe.directory"
 echo "[OK] Volume and Git permissions fixed"
 
-# Step 2: Configure Bazel with Docker information (one-time container setup)
+# Configure Bazel with Docker information (one-time container setup)
 echo "Configuring Bazel with Docker server information..."
 
 # Helper function to add Bazel keyword if not already present
@@ -57,7 +75,7 @@ add_bazel_keyword "docker_server_version" "${DOCKER_VERSION}"
 ARCH=$(uname -i 2>/dev/null || echo "unknown")
 add_bazel_keyword "arch" "${ARCH}"
 
-# Step 4: Unshallow Git repository (one-time setup)
+# Unshallow Git repository (one-time setup)
 echo "Setting up Git repository..."
 
 # Helper function to handle git shallow lock
@@ -100,7 +118,7 @@ else
     fi
 fi
 
-# Step 4: Create Python virtual environment and install dependencies
+# Create Python virtual environment and install dependencies
 echo "Creating Python virtual environment..."
 venv_created=false
 if [ ! -d "${WORKSPACE_FOLDER}/python3-venv/bin" ]; then
@@ -127,7 +145,7 @@ else
     echo "Info: Python virtual environment already exists"
 fi
 
-# Step 5: Build clang configuration
+# Build clang configuration
 echo "Building clang configuration..."
 
 # Backup existing .bazelrc.compiledb if it exists, then use our known-good config
@@ -169,7 +187,7 @@ else
     echo "Warning: Failed to build clang configuration"
 fi
 
-# Step 6: Setup GDB pretty printers
+# Setup GDB pretty printers
 echo "Setting up GDB pretty printers..."
 cd "${WORKSPACE_FOLDER}/.."
 if [ -d "Boost-Pretty-Printer" ]; then
@@ -189,7 +207,7 @@ else
 fi
 cd "${WORKSPACE_FOLDER}"
 
-# Step 7: Configure automatic Python virtual environment activation
+# Configure automatic Python virtual environment activation
 echo "Configuring automatic Python virtual environment activation..."
 
 # Helper function to add Python venv activation to shell config
@@ -220,7 +238,7 @@ else
     echo "Warning: Python virtual environment not found at ${WORKSPACE_FOLDER}/python3-venv"
 fi
 
-# Step 8: Sync Python dependencies
+# Sync Python dependencies
 echo "Syncing Python dependencies..."
 if [ -f "${WORKSPACE_FOLDER}/python3-venv/bin/activate" ]; then
     # Only run sync if venv was just created OR if we're updating an existing one
@@ -241,7 +259,7 @@ else
     echo "Warning: Python virtual environment not found at ${WORKSPACE_FOLDER}/python3-venv"
 fi
 
-# Step 9: Install Node modules
+# Install Node modules
 echo "Installing Node.js dependencies..."
 if bazel run @pnpm//:pnpm --config=local -- --dir "${WORKSPACE_FOLDER}" install; then
     echo "[OK] Node.js dependencies installed successfully"
diff --git a/docs/devcontainer/getting-started.md b/docs/devcontainer/getting-started.md
index d0ab52f4b16..8045f1a70ad 100644
--- a/docs/devcontainer/getting-started.md
+++ b/docs/devcontainer/getting-started.md
@@ -67,18 +67,29 @@ For Linux users, you can use Docker Engine directly.
 **Installation:**
 Follow the official guide: [docs.docker.com/engine/install](https://docs.docker.com/engine/install/)
 
-### 2. Install Visual Studio Code
+### 2. Create SSH Directory (Required)
+
+> **⚠️ Critical:** You **must** have a `~/.ssh` directory on your host machine before building the devcontainer. The devcontainer requires this directory to exist, regardless of whether you use SSH or HTTPS to clone the repository.
+
+```bash
+# On your HOST machine (not inside the container)
+mkdir -p ~/.ssh
+```
+
+If you skip this step, you'll encounter bind mount errors when trying to start the devcontainer.
+
+### 3. Install Visual Studio Code
 
 Download and install VS Code from [code.visualstudio.com](https://code.visualstudio.com/)
 
-### 3. Install Dev Containers Extension
+### 4. Install Dev Containers Extension
 
 1. Open VS Code
 2. Go to Extensions (⌘/Ctrl+Shift+X)
 3. Search for "Dev Containers"
 4. Install the [Dev Containers](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) extension by Microsoft
 
-### 4. Configure SSH Keys (Recommended)
+### 5. Configure SSH Keys (Recommended)
 
 To clone the repository using SSH (recommended for contributors), you'll need SSH keys configured with GitHub.
 
diff --git a/docs/devcontainer/troubleshooting.md b/docs/devcontainer/troubleshooting.md
index 79d9eca35c2..4776d509352 100644
--- a/docs/devcontainer/troubleshooting.md
+++ b/docs/devcontainer/troubleshooting.md
@@ -32,6 +32,54 @@ Restart VSCode. If you install Rancher Desktop while you already have VSCode ope
 
 ## Container Build Issues
 
+### Build Fails with SSH Bind Mount Error
+
+**Symptoms:**
+
+```
+Error response from daemon: invalid mount config for type "bind": bind source path does not exist: /Users/username/.ssh
+```
+
+Or on macOS/Linux systems using certain Docker providers:
+
+```
+Error response from daemon: invalid mount config for type "bind": bind source path does not exist: /socket_mnt/...
+```
+
+**Root Cause:**
+
+The devcontainer configuration mounts your `~/.ssh` directory to enable Git operations over SSH. If this directory doesn't exist on your host machine, the container fails to start. **This directory is required even if you plan to use HTTPS instead of SSH for cloning.**
+
+**Solutions:**
+
+1. **Create the .ssh directory on your host machine:**
+
+   ```bash
+   # On your HOST machine (not in container)
+   mkdir -p ~/.ssh
+   ```
+
+2. **Rebuild the container:**
+
+   - Command Palette → "Dev Containers: Rebuild Container"
+
+**Note on SSH Agent Forwarding:**
+
+SSH agent forwarding behavior varies by Docker provider on macOS:
+
+- **Docker Desktop**: Automatic SSH agent forwarding built-in
+- **OrbStack**: Automatic SSH agent forwarding built-in
+- **Rancher Desktop**:
+  - With dockerd runtime: Automatic agent forwarding
+  - With containerd runtime: Agent forwarding requires additional setup
+
+To use SSH agent forwarding, ensure your SSH keys are added to your host's SSH agent before starting the container:
+
+```bash
+ssh-add ~/.ssh/id_ed25519  # or your key name
+ssh-add -l  # verify keys are loaded
+```
+
 ### Build Fails with "No Space Left on Device"
 
 **Symptoms:**
diff --git a/etc/evergreen_yml_components/variants/misc/misc.yml b/etc/evergreen_yml_components/variants/misc/misc.yml
index 9e574f1452a..bff7337bd6c 100644
--- a/etc/evergreen_yml_components/variants/misc/misc.yml
+++ b/etc/evergreen_yml_components/variants/misc/misc.yml
@@ -89,6 +89,6 @@ buildvariants:
       - "evergreen/devcontainer*.sh"
       - "poetry_requirements.txt"
     run_on:
-      - ubuntu2204-small
+      - ubuntu2204-large
     tasks:
       - name: devcontainer_test
diff --git a/evergreen/devcontainer_cli_setup.sh b/evergreen/devcontainer_cli_setup.sh
index 33b588e2219..740646215c8 100755
--- a/evergreen/devcontainer_cli_setup.sh
+++ b/evergreen/devcontainer_cli_setup.sh
@@ -26,11 +26,15 @@ fi
 echo "npm version:"
 npm --version
 
-# Install devcontainer CLI locally in task workdir
+# Install devcontainer CLI to temp directory
 echo ""
 echo "Installing @devcontainers/cli..."
-INSTALL_DIR="$PWD/.devcontainer-cli"
-mkdir -p "$INSTALL_DIR"
+# Use CLI_INSTALL_DIR set by caller
+if [ -z "${CLI_INSTALL_DIR:-}" ]; then
+    echo "ERROR: CLI_INSTALL_DIR not set by caller"
+    exit 1
+fi
+INSTALL_DIR="$CLI_INSTALL_DIR"
 npm install -g --prefix "$INSTALL_DIR" @devcontainers/cli
 
 # Add to PATH for this script and subsequent commands
diff --git a/evergreen/devcontainer_test.sh b/evergreen/devcontainer_test.sh
index 0f602701640..fa126d2ec9c 100755
--- a/evergreen/devcontainer_test.sh
+++ b/evergreen/devcontainer_test.sh
@@ -13,6 +13,19 @@ SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
 REPO_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
 cd "$REPO_ROOT"
 
+# Create temp directory for devcontainer CLI installation
+CLI_INSTALL_DIR=$(mktemp -d)
+export CLI_INSTALL_DIR
+
+# Set up cleanup trap to remove temp directory on exit
+cleanup() {
+    if [ -d "$CLI_INSTALL_DIR" ]; then
+        echo "Cleaning up devcontainer CLI installation..."
+        rm -rf "$CLI_INSTALL_DIR"
+    fi
+}
+trap cleanup EXIT
+
 # Set a non-conflicting username for CI
 # In CI, USER is often "ubuntu" which conflicts with system users
 # Use a distinct name that won't conflict
@@ -37,8 +50,8 @@ if ! command -v devcontainer &>/dev/null; then
     echo "Installing devcontainer CLI..."
     bash "$SCRIPT_DIR/devcontainer_cli_setup.sh"
 
-    # Add CLI to PATH (installed locally by cli_setup.sh)
-    export PATH="$PWD/.devcontainer-cli/bin:$PATH"
+    # Add CLI to PATH (installed by cli_setup.sh)
+    export PATH="${CLI_INSTALL_DIR}/bin:$PATH"
 fi
 
 echo "Using devcontainer CLI version:"
@@ -76,30 +89,35 @@ echo "Container ID: $CONTAINER_ID"
 echo ""
 echo "=== Testing inside devcontainer ==="
 
-# Run commands inside the container using devcontainer exec
+# Helper function to run commands inside the container
+# Pass CI=true to all exec commands so engflow_auth wrapper skips credential helper setup
 # Pass the same --id-label so it can find the container we created
+devcontainer_run() {
+    devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" --remote-env CI=true "$@"
+}
+
 echo "Checking GCC version..."
-devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" gcc --version
+devcontainer_run gcc --version
 
 echo ""
 echo "Checking Python version..."
-devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" python3 --version
+devcontainer_run python3 --version
 
 echo ""
 echo "Checking Python venv..."
-devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" bash -c "source python3-venv/bin/activate && python --version"
+devcontainer_run bash -c "source python3-venv/bin/activate && python --version"
 
 echo ""
 echo "Checking Bazel..."
-devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" bazel --version
+devcontainer_run bazel --version
 
 echo ""
 echo "Checking Git..."
-devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" git --version
+devcontainer_run git --version
 
 echo ""
 echo "Checking clangd configuration..."
-if ! devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" test -f compile_commands.json; then
+if ! devcontainer_run test -f compile_commands.json; then
     echo "ERROR: compile_commands.json not found - clangd setup failed"
     exit 1
 fi
@@ -107,12 +125,42 @@ echo "✓ compile_commands.json exists"
 
 echo ""
 echo "Checking .clang-tidy configuration..."
-if ! devcontainer exec --workspace-folder . --id-label "test-id=${TEST_ID}" test -f .clang-tidy; then
+if ! devcontainer_run test -f .clang-tidy; then
     echo "ERROR: .clang-tidy not found - clang-tidy setup failed"
     exit 1
 fi
 echo "✓ .clang-tidy exists"
 
+echo ""
+echo "=== Running representative user operations ==="
+
+echo ""
+echo "Running C++ unit test..."
+devcontainer_run bazel test //src/mongo/bson:bson_test --config=local --test_output=errors
+
+echo ""
+echo "Building IDL target (tests code generation)..."
+devcontainer_run bazel build //src/mongo/bson:bson_validate --config=local
+
+echo ""
+echo "Building install-dist-test target (necessary for resmoke below)..."
+devcontainer_run bazel build install-dist-test
+
+echo ""
+echo "Running Python test via resmoke..."
+devcontainer_run python3 buildscripts/resmoke.py run --suite=core --sanityCheck
+
+echo ""
+echo "Checking code formatting..."
+devcontainer_run bazel run format
+
+echo ""
+echo "Running linter..."
+devcontainer_run bazel run lint
+
+echo ""
+echo "✅ All representative operations passed"
+
 echo ""
 echo "=== Stopping devcontainer ==="