Update versions (#82)

### Update versions

- auto: dd911a47b3
- hlky: 17748cbc9c
- lstein: 50d607ffea

.github/pull_request_template.md

@@ -0,0 +1,5 @@
+### Update versions
+
+- auto: https://github.com/AUTOMATIC1111/stable-diffusion-webui/commit/
+- hlky: https://github.com/sd-webui/stable-diffusion-webui/commit/
+- lstein: https://github.com/lstein/stable-diffusion/commit/

.github/workflows/stale.yml

@@ -0,0 +1,20 @@
+name: 'Close stale issues and PRs'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v5
+        with:
+          only-labels: awaiting-response
+          stale-issue-message: This issue is stale because it has been open 14 days with no activity. Remove stale label or comment or this will be closed in 7 days.
+          stale-pr-message: This PR is stale because it has been open 14 days with no activity. Remove stale label or comment or this will be closed in 7 days.
+          close-issue-message: This issue was closed because it has been stalled for 7 days with no activity.
+          close-pr-message: This PR was closed because it has been stalled for 7 days with no activity.
+          days-before-issue-stale: 14
+          days-before-pr-stale: 14
+          days-before-issue-close: 7
+          days-before-pr-close: 7

README.md

@@ -41,13 +41,18 @@ Screenshots:
 
 ### lstein
 
-[lstein's fork](https://github.com/lstein/stable-diffusion) is very mature when it comes to the cli, but less so for the WebUI.
+[lstein's fork](https://github.com/lstein/stable-diffusion) is very mature when it comes to the cli, and the WebUI has potential.
+
+| Text to image                                                                                              | Image to image                                                                                             | Extras                                                                                                     |
+| ---------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------- |
+| ![](https://user-images.githubusercontent.com/24505302/190662506-dabdc967-93af-4d78-8533-394604d29ba4.jpg) | ![](https://user-images.githubusercontent.com/24505302/190662557-7640d9f0-30d8-4527-97b0-07d3f48108d4.jpg) | ![](https://user-images.githubusercontent.com/24505302/190662588-37a01fad-f993-4674-9ae6-8714aa229f7b.jpg) |
 
 ## Setup & Usage
 
 Visit the wiki for [Setup](https://github.com/AbdBarho/stable-diffusion-webui-docker/wiki/Setup) and [Usage](https://github.com/AbdBarho/stable-diffusion-webui-docker/wiki/Usage) instructions, checkout the [FAQ](https://github.com/AbdBarho/stable-diffusion-webui-docker/wiki/FAQ) page if you face any problems, or create a new issue!
 
 ## Contributing
+
 Contributions are welcome! create an issue first of what you want to contribute (before you implement anything) so we can talk about it.
 
 ## Disclaimer

cache/.gitignore

@@ -2,3 +2,4 @@
 /transformers
 /weights
 /models
+/custom-models

docker-compose.yml

@@ -39,7 +39,7 @@ services:
       - *v2
       - ./services/AUTOMATIC1111/config.json:/stable-diffusion-webui/config.json
     environment:
-      - CLI_ARGS=--medvram --opt-split-attention
+      - CLI_ARGS=--medvram
 
   automatic1111-cpu:
     <<: *automatic
@@ -52,3 +52,6 @@ services:
     <<: *base_service
     profiles: ["lstein"]
     build: ./services/lstein/
+    environment:
+      - PRELOAD=false
+      - CLI_ARGS=

services/AUTOMATIC1111/Dockerfile

@@ -1,13 +1,16 @@
 # syntax=docker/dockerfile:1
 
 FROM alpine/git:2.36.2 as download
+
+
+RUN git clone --depth 1 https://github.com/CompVis/stable-diffusion.git repositories/stable-diffusion
+RUN git clone --depth 1 https://github.com/sczhou/CodeFormer.git repositories/CodeFormer
+RUN git clone --depth 1 https://github.com/salesforce/BLIP.git repositories/BLIP
+
 RUN <<EOF
 # because taming-transformers is huge
 git config --global http.postBuffer 1048576000
-git clone https://github.com/sczhou/CodeFormer.git repositories/CodeFormer
-git clone https://github.com/CompVis/stable-diffusion.git repositories/stable-diffusion
-git clone https://github.com/salesforce/BLIP.git repositories/BLIP
-git clone https://github.com/CompVis/taming-transformers.git repositories/taming-transformers
+git clone --depth 1 https://github.com/CompVis/taming-transformers.git repositories/taming-transformers
 rm -rf repositories/taming-transformers/data repositories/taming-transformers/assets
 EOF
 
@@ -27,22 +30,21 @@ RUN apt-get update && apt install fonts-dejavu-core rsync -y && apt-get clean
 RUN <<EOF
 git clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git
 cd stable-diffusion-webui
-git reset --hard 13eec4f3d4081fdc43883c5ef02e471a2b6c7212
-conda env update --file environment-wsl2.yaml -n base
-conda clean -a -y
+git reset --hard 7e77938230d4fefb6edccdba0b80b61d8416673e
 pip install --prefer-binary --no-cache-dir -r requirements.txt
 EOF
 
 ENV ROOT=/stable-diffusion-webui \
   WORKDIR=/stable-diffusion-webui/repositories/stable-diffusion
 
+
 COPY --from=download /git/ ${ROOT}
 RUN pip install --prefer-binary --no-cache-dir -r ${ROOT}/repositories/CodeFormer/requirements.txt
 
 # Note: don't update the sha of previous versions because the install will take forever
 # instead, update the repo state in a later step
 
-ARG SHA=2ddaeb318a9626502ef4bf949a312253d8021ff0
+ARG SHA=dd911a47b3c3313b3938b700eb26cbd5bb3e1c95
 RUN <<EOF
 cd stable-diffusion-webui
 git pull --rebase
@@ -61,4 +63,5 @@ RUN chmod +x /docker/mount.sh && python3 /docker/info.py ${ROOT}/modules/ui.py
 WORKDIR ${WORKDIR}
 EXPOSE 7860
 # run, -u to not buffer stdout / stderr
-CMD /docker/mount.sh && python3 -u ../../webui.py --listen --port 7860 --hide-ui-dir-config ${CLI_ARGS}
+CMD /docker/mount.sh && \
+  python3 -u ../../webui.py --listen --port 7860 --hide-ui-dir-config --ckpt-dir /cache/custom-models --ckpt /cache/models/model.ckpt ${CLI_ARGS}

services/AUTOMATIC1111/README.md

@@ -1,14 +0,0 @@
-# WebUI for AUTOMATIC1111
-
-The WebUI of [AUTOMATIC1111/stable-diffusion-webui](https://github.com/AUTOMATIC1111/stable-diffusion-webui) as docker container!
-
-## Setup
-
-Clone this repo, download the `model.ckpt` and `GFPGANv1.3.pth` and put into the `models` folder as mentioned in [the main README](../README.md), then run
-
-```
-cd AUTOMATIC1111
-docker compose up --build
-```
-
-You can change the cli parameters in `AUTOMATIC1111/docker-compose.yml`. The full list of cil parameters can be found [here](https://github.com/AUTOMATIC1111/stable-diffusion-webui/blob/master/modules/shared.py)

services/AUTOMATIC1111/config.json

@@ -44,5 +44,15 @@
   "interrogate_clip_num_beams": 1,
   "interrogate_clip_min_length": 24,
   "interrogate_clip_max_length": 48,
-  "interrogate_clip_dict_limit": 1500.0
+  "interrogate_clip_dict_limit": 1500.0,
+  "samples_filename_pattern": "",
+  "directories_filename_pattern": "",
+  "save_selected_only": false,
+  "filter_nsfw": false,
+  "img2img_color_correction": false,
+  "img2img_fix_steps": false,
+  "enable_quantization": false,
+  "enable_batch_seeds": true,
+  "memmon_poll_rate": 8,
+  "sd_model_checkpoint": null
 }

services/AUTOMATIC1111/mount.sh

@@ -32,5 +32,4 @@ rm -rf ${ROOT}/repositories/CodeFormer/weights/CodeFormer ${ROOT}/repositories/C
 ln -sf -T /cache/weights ${ROOT}/repositories/CodeFormer/weights/CodeFormer
 ln -sf -T /cache/weights ${ROOT}/repositories/CodeFormer/weights/facelib
 
-# mount config
-# ln -sf /docker/config.json ${WORKDIR}/config.json
+mkdir -p /cache/torch /cache/transformers /cache/weights /cache/models /cache/custom-models

services/download/Dockerfile

@@ -1,6 +1,6 @@
 FROM bash:alpine3.15
 
-RUN apk add parallel
+RUN apk add parallel aria2
 COPY . /docker
 RUN chmod +x /docker/download.sh
 ENTRYPOINT ["/docker/download.sh"]

services/download/download.sh

@@ -2,32 +2,12 @@
 
 set -Eeuo pipefail
 
-# [[ "$(sha256sum -b $file | head -c 64)" == "$sha" ]]
+mkdir -p /cache/torch /cache/transformers /cache/weights /cache/models /cache/custom-models
 
-declare -A MODELS
+echo "Downloading, this might take a while..."
 
-MODELS['model.ckpt']='https://www.googleapis.com/storage/v1/b/aai-blog-files/o/sd-v1-4.ckpt?alt=media'
-MODELS['GFPGANv1.3.pth']='https://github.com/TencentARC/GFPGAN/releases/download/v1.3.0/GFPGANv1.3.pth'
-MODELS['RealESRGAN_x4plus.pth']='https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth'
-MODELS['RealESRGAN_x4plus_anime_6B.pth']='https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.2.4/RealESRGAN_x4plus_anime_6B.pth'
-MODELS['LDSR.yaml']='https://heibox.uni-heidelberg.de/f/31a76b13ea27482981b4/?dl=1'
-MODELS['LDSR.ckpt']='https://heibox.uni-heidelberg.de/f/578df07c8fc04ffbadf3/?dl=1'
-
-echo "Downloading..."
-
-for file in "${!MODELS[@]}"; do
-  url=${MODELS[$file]}
-  full_path="/cache/models/$file"
-
-  if [[ -f "$full_path" ]]; then
-    echo "- $file exists"
-    continue
-  fi
-
-  mkdir -p $(dirname $full_path)
-  wget --tries=10 -c -O $full_path $url
-done
+aria2c --input-file /docker/links.txt --dir /cache/models --continue
 
 echo "Checking SHAs..."
 
-time parallel --will-cite -a /docker/checksums.sha256 "echo -n {} | sha256sum -c"
+parallel --will-cite -a /docker/checksums.sha256 "echo -n {} | sha256sum -c"

services/download/links.txt

@@ -0,0 +1,12 @@
+https://www.googleapis.com/storage/v1/b/aai-blog-files/o/sd-v1-4.ckpt?alt=media
+  out=model.ckpt
+https://github.com/TencentARC/GFPGAN/releases/download/v1.3.0/GFPGANv1.3.pth
+  out=GFPGANv1.3.pth
+https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth
+  out=RealESRGAN_x4plus.pth
+https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.2.4/RealESRGAN_x4plus_anime_6B.pth
+  out=RealESRGAN_x4plus_anime_6B.pth
+https://heibox.uni-heidelberg.de/f/31a76b13ea27482981b4/?dl=1
+  out=LDSR.yaml
+https://heibox.uni-heidelberg.de/f/578df07c8fc04ffbadf3/?dl=1
+  out=LDSR.ckpt

services/hlky/Dockerfile

@@ -13,6 +13,7 @@ RUN apt-get update && apt install fonts-dejavu-core rsync gcc -y && apt-get clea
 
 
 RUN <<EOF
+git config --global http.postBuffer 1048576000
 git clone https://github.com/sd-webui/stable-diffusion-webui.git stable-diffusion
 cd stable-diffusion
 git reset --hard 7623a5734740025d79b710f3744bff9276e1467b
@@ -20,15 +21,12 @@ conda env update --file environment.yaml -n base
 conda clean -a -y
 EOF
 
-# new dependency, should be added to the environment.yaml
-RUN pip install -U --no-cache-dir pyperclip
-
 # Note: don't update the sha of previous versions because the install will take forever
 # instead, update the repo state in a later step
 ARG BRANCH=master
-ARG SHA=833a91047df999302f699637768741cecee9c37b
+# ARG SHA=833a91047df999302f699637768741cecee9c37b
 # ARG BRANCH=dev
-# ARG SHA=b4de6caf697d311c1238c15a4c863fa529a35522
+ARG SHA=17748cbc9c34df44d0381c42e4f0fe1903089438
 RUN <<EOF
 cd stable-diffusion
 git fetch
@@ -38,11 +36,12 @@ conda env update --file environment.yaml -n base
 conda clean -a -y
 EOF
 
+RUN pip uninstall transformers -y && pip install -U --no-cache-dir pyperclip transformers==4.22
+
 # Latent diffusion
 RUN <<EOF
-git clone https://github.com/Hafiidz/latent-diffusion.git
+git clone --depth 1 https://github.com/Hafiidz/latent-diffusion.git
 cd latent-diffusion
-git reset --hard e1a84a89fcbb49881546cf2acf1e7e250923dba0
 # hacks all the way down
 mv ldm ldm_latent &&
 sed -i -- 's/from ldm/from ldm_latent/g' *.py
@@ -55,9 +54,9 @@ COPY . /docker/
 RUN python /docker/info.py /stable-diffusion/frontend/frontend.py && chmod +x /docker/mount.sh
 
 WORKDIR /stable-diffusion
-ENV TRANSFORMERS_CACHE=/cache/transformers TORCH_HOME=/cache/torch CLI_ARGS=""
+ENV TRANSFORMERS_CACHE=/cache/transformers TORCH_HOME=/cache/torch PYTHONPATH="${PYTHONPATH}:/stable-diffusion" CLI_ARGS=""
 EXPOSE 7860
 # run, -u to not buffer stdout / stderr
 CMD /docker/mount.sh && \
   python3 -u scripts/webui.py --outdir /output --ckpt /cache/models/model.ckpt --ldsr-dir /latent-diffusion --inbrowser ${CLI_ARGS}
-  # STREAMLIT_SERVER_PORT=7860 python -m streamlit run scripts/webui_streamlit.py
+# STREAMLIT_SERVER_PORT=7860 python -m streamlit run scripts/webui_streamlit.py

services/hlky/webui_streamlit.yaml

@@ -2,9 +2,12 @@
 general:
   gpu: 0
   outdir: /outputs
-  ckpt: "/cache/models/model.ckpt"
+
+  default_model: "Stable Diffusion v1.4"
+  default_model_config: "configs/stable-diffusion/v1-inference.yaml"
+  default_model_path: "/cache/models/model.ckpt"
   fp:
-    name: "embeddings/alex/embeddings_gs-11000.pt"
+    name:
   GFPGAN_dir: "./src/gfpgan"
   RealESRGAN_dir: "./src/realesrgan"
   RealESRGAN_model: "RealESRGAN_x4plus"
@@ -15,44 +18,90 @@ general:
   extra_models_cpu: False
   extra_models_gpu: False
   save_metadata: True
+  save_format: "png"
   skip_grid: False
   skip_save: False
   grid_format: "jpg:95"
-  save_format: "png"
   n_rows: -1
   no_verify_input: False
   no_half: False
+  use_float16: False
   precision: "autocast"
   optimized: False
-  optimized_turbo: False
+  optimized_turbo: True
+  optimized_config: "optimizedSD/v1-inference.yaml"
   update_preview: True
-  update_preview_frequency: 1
+  update_preview_frequency: 5
 
 txt2img:
   prompt:
   height: 512
   width: 512
-  cfg_scale: 5.0
+  cfg_scale: 7.5
   seed: ""
   batch_count: 1
   batch_size: 1
-  sampling_steps: 50
-  default_sampler: "k_lms"
+  sampling_steps: 30
+  default_sampler: "k_euler"
   separate_prompts: False
+  update_preview: True
+  update_preview_frequency: 5
   normalize_prompt_weights: True
   save_individual_images: True
   save_grid: True
   group_by_prompt: True
   save_as_jpg: False
-  use_GFPGAN: True
-  use_RealESRGAN: True
+  use_GFPGAN: False
+  use_RealESRGAN: False
   RealESRGAN_model: "RealESRGAN_x4plus"
   variant_amount: 0.0
   variant_seed: ""
+  write_info_files: True
+
+txt2vid:
+  default_model: "CompVis/stable-diffusion-v1-4"
+  custom_models_list:
+    [
+      "CompVis/stable-diffusion-v1-4",
+      "naclbit/trinart_stable_diffusion_v2",
+      "hakurei/waifu-diffusion",
+      "osanseviero/BigGAN-deep-128",
+    ]
+  prompt:
+  height: 512
+  width: 512
+  cfg_scale: 7.5
+  seed: ""
+  batch_count: 1
+  batch_size: 1
+  sampling_steps: 30
+  num_inference_steps: 200
+  default_sampler: "k_euler"
+  scheduler_name: "klms"
+  separate_prompts: False
+  update_preview: True
+  update_preview_frequency: 5
+  dynamic_preview_frequency: True
+  normalize_prompt_weights: True
+  save_individual_images: True
+  save_video: True
+  group_by_prompt: True
+  write_info_files: True
+  do_loop: False
+  save_as_jpg: False
+  use_GFPGAN: False
+  use_RealESRGAN: False
+  RealESRGAN_model: "RealESRGAN_x4plus"
+  variant_amount: 0.0
+  variant_seed: ""
+  beta_start: 0.00085
+  beta_end: 0.012
+  beta_scheduler_type: "linear"
+  max_frames: 1000
 
 img2img:
   prompt:
-  sampling_steps: 50
+  sampling_steps: 30
   # Adding an int to toggles enables the corresponding feature.
   # 0: Create prompt matrix (separate multiple prompts using |, and get all combinations of them)
   # 1: Normalize Prompt Weights (ensure sum of weights add up to 1.0)
@@ -65,11 +114,12 @@ img2img:
   # 8: jpg samples
   # 9: Fix faces using GFPGAN
   # 10: Upscale images using Real-ESRGAN
-  sampler_name: k_lms
+  sampler_name: "k_euler"
   denoising_strength: 0.45
   # 0: Keep masked area
   # 1: Regenerate only masked area
   mask_mode: 0
+  mask_restore: False
   # 0: Just resize
   # 1: Crop and resize
   # 2: Resize and fill
@@ -77,7 +127,7 @@ img2img:
   # Leave blank for random seed:
   seed: ""
   ddim_eta: 0.0
-  cfg_scale: 5.0
+  cfg_scale: 7.5
   batch_count: 1
   batch_size: 1
   height: 512
@@ -87,16 +137,19 @@ img2img:
   loopback: True
   random_seed_loopback: True
   separate_prompts: False
+  update_preview: True
+  update_preview_frequency: 5
   normalize_prompt_weights: True
   save_individual_images: True
   save_grid: True
   group_by_prompt: True
   save_as_jpg: False
-  use_GFPGAN: True
-  use_RealESRGAN: True
+  use_GFPGAN: False
+  use_RealESRGAN: False
   RealESRGAN_model: "RealESRGAN_x4plus"
   variant_amount: 0.0
   variant_seed: ""
+  write_info_files: True
 
 gfpgan:
   strength: 100

services/lstein/Dockerfile

@@ -6,7 +6,8 @@ SHELL ["/bin/bash", "-ceuxo", "pipefail"]
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-RUN conda install python=3.8.5 && conda clean -a -y
+# now it requires python3.9
+RUN conda install python=3.9 && conda clean -a -y
 RUN conda install pytorch==1.11.0 torchvision==0.12.0 cudatoolkit=11.3 -c pytorch && conda clean -a -y
 
 RUN apt-get update && apt install fonts-dejavu-core rsync gcc -y && apt-get clean
@@ -15,17 +16,39 @@ RUN apt-get update && apt install fonts-dejavu-core rsync gcc -y && apt-get clea
 RUN <<EOF
 git clone https://github.com/lstein/stable-diffusion.git
 cd stable-diffusion
-git reset --hard 751283a2de81bee4bb571fbabe4adb19f1d85b97
+git reset --hard e994073b5bdfa3c77313681c5944be1544eb65b6
+sed -i -- 's/python=3.8.5/python=3.9/g' environment.yaml
 conda env update --file environment.yaml -n base
 conda clean -a -y
 EOF
 
-ENV TRANSFORMERS_CACHE=/cache/transformers TORCH_HOME=/cache/torch CLI_ARGS=""
 
+ARG BRANCH=development SHA=50d607ffea3734072a80e38b09ba0c3758af5d40
+# ARG BRANCH=main SHA=89da371f4841f7e05da5a1672459d700c3920784
+RUN <<EOF
+cd stable-diffusion
+git fetch
+git reset --hard
+git checkout ${BRANCH}
+git reset --hard ${SHA}
+conda env update --file environment.yaml -n base
+conda clean -a -y
+EOF
+
+RUN pip uninstall opencv-python -y && pip install --prefer-binary --force-reinstall --no-cache-dir opencv-python-headless transformers==4.22
+
+COPY . /docker/
+RUN <<EOF
+python3 /docker/info.py /stable-diffusion/static/dream_web/index.html
+chmod +x /docker/mount.sh
+sed -i -- 's/outputs\//\/output/g' /stable-diffusion/backend/server.py
+EOF
+
+
+ENV TRANSFORMERS_CACHE=/cache/transformers TORCH_HOME=/cache/torch PRELOAD=false CLI_ARGS=""
 WORKDIR /stable-diffusion
-
 EXPOSE 7860
-# run, -u to not buffer stdout / stderr
-CMD mkdir -p /stable-diffusion/models/ldm/stable-diffusion-v1/ && \
-  ln -sf /cache/models/model.ckpt /stable-diffusion/models/ldm/stable-diffusion-v1/model.ckpt && \
+
+CMD /docker/mount.sh && \
   python3 -u scripts/dream.py --outdir /output --web --host 0.0.0.0 --port 7860 ${CLI_ARGS}
+  #python3 -u backend/server.py

services/lstein/README.md

@@ -1,14 +0,0 @@
-# WebUI for lstein
-
-The WebUI of [lstein/stable-diffusion](https://github.com/lstein/stable-diffusion) as docker container!
-
-Although it is a simple UI, the project has a lot of potential.
-
-## Setup
-
-Clone this repo, download the `model.ckpt` and put into the `models` folder as mentioned in [the main README](../README.md), then run
-
-```
-cd lstein
-docker compose up --build
-```

services/lstein/info.py

@@ -0,0 +1,10 @@
+import sys
+from pathlib import Path
+
+file = Path(sys.argv[1])
+file.write_text(
+  file.read_text()\
+  .replace('GitHub site</a>', """
+  GitHub site</a>, Deployed with <a href="https://github.com/AbdBarho/stable-diffusion-webui-docker/">stable-diffusion-webui-docker</a>
+""", 1)
+)

services/lstein/mount.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+set -eu
+
+ROOT=/stable-diffusion
+
+mkdir -p "${ROOT}/models/ldm/stable-diffusion-v1/"
+ln -sf /cache/models/model.ckpt "${ROOT}/models/ldm/stable-diffusion-v1/model.ckpt"
+
+if test -f /cache/models/GFPGANv1.3.pth; then
+  base="${ROOT}/src/gfpgan/experiments/pretrained_models/"
+  mkdir -p "${base}"
+  ln -sf /cache/models/GFPGANv1.3.pth "${base}/GFPGANv1.3.pth"
+  echo "Mounted GFPGANv1.3.pth"
+fi
+
+# facexlib
+FACEX_WEIGHTS=/opt/conda/lib/python3.9/site-packages/facexlib/weights
+
+rm -rf "${FACEX_WEIGHTS}"
+mkdir -p /cache/weights
+ln -sf -T /cache/weights "${FACEX_WEIGHTS}"
+
+REALESRGAN_WEIGHTS=/opt/conda/lib/python3.9/site-packages/realesrgan/weights
+rm -rf "${REALESRGAN_WEIGHTS}"
+ln -sf -T /cache/weights "${REALESRGAN_WEIGHTS}"
+
+if "${PRELOAD}" == "true"; then
+  python3 -u scripts/preload_models.py
+fi