diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index e4e6f83551..17bb976a5d 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -24,13 +24,6 @@ jobs:
           base_image: mosaicml/pytorch:2.3.1_cu121-python3.11-ubuntu20.04-aws
           dep_groups: "[gpu]"
     steps:
-    - name: Maximize Build Space on Worker
-      uses: easimon/maximize-build-space@v4
-      with:
-        overprovision-lvm: true
-        remove-dotnet: true
-        remove-android: true
-        remove-haskell: true
 
     - name: Checkout
       uses: actions/checkout@v3
@@ -47,6 +40,13 @@ jobs:
         username: ${{ secrets.DOCKER_HUB_USERNAME }}
         password: ${{ secrets.DOCKER_HUB_PASSWORD }}
 
+    - name: Login to GHCR
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.GHCR_USERNAME }}
+        password: ${{ secrets.GHCR_TOKEN }}
+        registry: ghcr.io
+
     - name: Calculate Docker Image Variables
       run: |
         set -euxo pipefail
@@ -60,13 +60,17 @@ jobs:
         if [ "${{ github.event_name }}" == "pull_request" ]; then
           echo "Triggered by pull_request event."
           STAGING_REPO="mosaicml/ci-staging"
-          IMAGE_TAG="${STAGING_REPO}:${{matrix.name}}-${GIT_SHA}"
+          GHCR_STAGING_REPO="ghcr.io/databricks-mosaic/ci-staging"
+          GHCR_IMAGE_TAG="${GHCR_STAGING_REPO}:${{matrix.name}}-${GIT_SHA}"
+          IMAGE_TAG="${STAGING_REPO}:${{matrix.name}}-${GIT_SHA},${GHCR_IMAGE_TAG}"
           IMAGE_CACHE="${STAGING_REPO}:${{matrix.name}}-buildcache"
         else
           # Triggered by push or workflow_dispatch event
           echo "Triggered by ${{ github.event_name }} event, releasing to prod"
           PROD_REPO="mosaicml/llm-foundry"
-          IMAGE_TAG="${PROD_REPO}:${{matrix.name}}-${GIT_SHA},${PROD_REPO}:${{matrix.name}}-latest"
+          GHCR_PROD_REPO="ghcr.io/databricks-mosaic/llm-foundry"
+          GHCR_IMAGE_TAG="${GHCR_PROD_REPO}:${{matrix.name}}-${GIT_SHA},${GHCR_PROD_REPO}:${{matrix.name}}-latest"
+          IMAGE_TAG="${PROD_REPO}:${{matrix.name}}-${GIT_SHA},${PROD_REPO}:${{matrix.name}}-latest,${GHCR_IMAGE_TAG}"
           IMAGE_CACHE="${PROD_REPO}:${{matrix.name}}-buildcache"
         fi
 
diff --git a/llmfoundry/models/layers/ffn.py b/llmfoundry/models/layers/ffn.py
index a28725ee0f..8028a65a8b 100644
--- a/llmfoundry/models/layers/ffn.py
+++ b/llmfoundry/models/layers/ffn.py
@@ -53,6 +53,19 @@
 }
 
 
+def quickgelu_activation(input: torch.Tensor) -> torch.Tensor:
+    """Applies GELU approximation that is fast but somewhat inaccurate.
+
+    Args:
+        input (torch.Tensor): Input tensor of shape(*), where * means any
+            number of dimensions
+
+    Returns:
+        torch.Tensor: Tensor with same shape as input tensor
+    """
+    return input * torch.sigmoid(1.702 * input)
+
+
 def resolve_ffn_act_fn(
     config: Optional[dict] = None,
 ) -> Callable[[torch.Tensor], torch.Tensor]:
@@ -70,10 +83,13 @@ def resolve_ffn_act_fn(
         config = _FFN_ACT_FN_DEFAULT
     config = deepcopy(config)
     name = config.pop('name')
-    if not hasattr(torch.nn.functional, name):
-        raise ValueError(f'Unrecognized activation function name ({name}).')
-    act = getattr(torch.nn.functional, name)
-    return partial(act, **config)
+    if name == 'quick_gelu':
+        return quickgelu_activation
+    else:
+        if not hasattr(torch.nn.functional, name):
+            raise ValueError(f'Unrecognized activation function name ({name}).')
+        act = getattr(torch.nn.functional, name)
+        return partial(act, **config)
 
 
 _DEFAULT_ACT_FN = resolve_ffn_act_fn(_FFN_ACT_FN_DEFAULT)
diff --git a/setup.py b/setup.py
index 6193fdc6b4..494db8d62a 100644
--- a/setup.py
+++ b/setup.py
@@ -58,7 +58,7 @@
     'mlflow>=2.14.1,<2.15',
     'accelerate>=0.25,<0.33',  # for HF inference `device_map`
     'transformers>=4.43.2,<4.44',
-    'mosaicml-streaming>=0.7.6,<0.8',
+    'mosaicml-streaming>=0.8.0,<0.9',
     'torch>=2.3.0,<2.4',
     'datasets>=2.19,<2.20',
     'fsspec==2023.6.0',  # newer version results in a bug in datasets that duplicates data
diff --git a/tests/models/layers/test_ffn.py b/tests/models/layers/test_ffn.py
new file mode 100644
index 0000000000..bb78763f58
--- /dev/null
+++ b/tests/models/layers/test_ffn.py
@@ -0,0 +1,73 @@
+# Copyright 2024 MosaicML LLM Foundry authors
+# SPDX-License-Identifier: Apache-2.0
+
+import pytest
+import torch
+import torch.distributed as dist
+import torch.nn as nn
+
+from llmfoundry.models.layers.ffn import quickgelu_activation
+from llmfoundry.models.layers.layer_builders import build_ffn
+
+
+@pytest.mark.gpu
+def test_quickgelu_activation():
+    d_model = 32
+    expansion_ratio = 1
+    no_bias = True
+    ffn_config = {
+        'ffn_act_fn': {
+            'name': 'quick_gelu',
+        },
+        'ffn_type': 'mptmlp',
+    }
+    rank: int = dist.get_rank()
+    device_str = f'cuda:{rank}'
+    device: torch.device = torch.device(device_str)
+
+    ffn1 = build_ffn(
+        name=ffn_config['ffn_type'],
+        d_model=d_model,
+        expansion_ratio=expansion_ratio,
+        device=device_str,
+        bias=not no_bias,
+        ffn_kwargs=ffn_config,
+    )
+    assert (
+        ffn1.act == quickgelu_activation
+    ), f'Expected quick_gelu activation function, got {ffn1.act}'
+
+    ffn_config = {
+        'ffn_act_fn': {
+            'name': 'gelu',
+        },
+        'ffn_type': 'mptmlp',
+    }
+    ffn2 = build_ffn(
+        name=ffn_config['ffn_type'],
+        d_model=d_model,
+        expansion_ratio=expansion_ratio,
+        device=device_str,
+        bias=not no_bias,
+        ffn_kwargs=ffn_config,
+    )
+
+    def num_params(model: nn.Module) -> int:
+        model_parameters = filter(lambda p: p.requires_grad, model.parameters())
+        return sum([p.numel() for p in model_parameters])
+
+    ffn1_numparams = num_params(ffn1)
+    ffn2_numparams = num_params(ffn2)
+    assert (
+        ffn1_numparams == ffn2_numparams
+    ), 'Only activation paths should have changed, re-check modeling!'
+
+    input_ = torch.rand(1, d_model, device=device)
+    output1 = ffn1(input_)
+    output2 = ffn2(input_)
+    assert (
+        output1.numel() == output2.numel()
+    ), 'Only activation paths should have changed, re-check modeling!'
+    assert (
+        not torch.allclose(output1, output2)
+    ), 'Functions are different, outputs should not match!'