Fix logging in the TransT serverless function

The Docker image for this function includes Conda, and uses `conda run` to
run the Nuclio processor. Unfortunately, `conda run` buffers the entire output
of the child process until that process exits, and since the processor never exits,
its logs are never printed (and slowly consume memory).

Conda is actually completely useless here, so just get rid of it, which fixes
the problem.

In addition, apply a few other improvements:

* Synchronize the PyTorch and TransT versions between the CPU and GPU
  variants.

* Replace `opencv-python` with `opencv-python-headless`, which has fewer
  dependencies.

* Use the `ADD` command instead of wget.

Altogether, these improvements shave ~780 MB off the size of the CPU image
(didn't check for the GPU one).

CHANGELOG.md

@@ -49,6 +49,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - \[API\] The `predefined` sorting method for task data uploads (<https://github.com/opencv/cvat/pull/5083>)
 - Allowed slashes in export filenames. (<https://github.com/opencv/cvat/pull/6265>)
 - Dataset export error with `outside` property of tracks (<https://github.com/opencv/cvat/issues/5971>)
+- Broken logging in the TransT serverless function
+  (<https://github.com/opencv/cvat/pull/6290>)
 
 ## \[2.4.5] - 2023-06-02
 ### Added

serverless/pytorch/dschoerk/transt/nuclio/function-gpu.yaml

@@ -22,42 +22,28 @@ spec:
 
     directives:
       preCopy:
-        - kind: ENV
-          value: PATH="/root/miniconda3/bin:${PATH}"
-        - kind: ARG
-          value: PATH="/root/miniconda3/bin:${PATH}"
         - kind: RUN
-          value: rm -f /etc/apt/sources.list.d/cuda.list /etc/apt/sources.list.d/nvidia-ml.list
-        - kind: RUN
-          value: apt update && apt install -y --no-install-recommends wget git ca-certificates libglib2.0-0 libgl1 && rm -rf /var/lib/apt/lists/* # libxrender1 libxext6
-        - kind: RUN
-          value: wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh &&
-            chmod +x Miniconda3-latest-Linux-x86_64.sh && bash Miniconda3-latest-Linux-x86_64.sh -b &&
-            rm -f Miniconda3-latest-Linux-x86_64.sh
+          value: |-
+            apt update \
+              && apt install -y --no-install-recommends \
+                git \
+                ca-certificates \
+                python-is-python3 \
+                python3 \
+                python3-pip \
+              && rm -rf /var/lib/apt/lists/*
         - kind: WORKDIR
           value: /opt/nuclio
         - kind: RUN
-          value: conda create -y -n transt python=3.8
-        - kind: SHELL
-          value: '["conda", "run", "-n", "transt", "/bin/bash", "-c"]'
-        - kind: RUN
-          value: git clone https://github.com/dschoerk/TransT trans-t
-
-        - kind: RUN
-          value: pip install torch==1.7.0+cu110 torchvision==0.8.1+cu110 -f https://download.pytorch.org/whl/torch_stable.html
-
-        - kind: RUN
-          value: pip install jsonpickle opencv-python
-
-        - kind: RUN
-          value: wget --no-check-certificate 'https://drive.google.com/uc?id=1Pq0sK-9jmbLAVtgB9-dPDc2pipCxYdM5' -O /transt.pth
-
-        - kind: RUN
-          value: apt remove -y git wget
+          value: git clone --depth 1 --branch v1.0 https://github.com/dschoerk/TransT trans-t
         - kind: RUN
-          value: cd trans-t
-        - kind: ENTRYPOINT
-          value: '["conda", "run", "-n", "transt"]'
+          value: |-
+            pip install \
+              jsonpickle opencv-python-headless \
+              torch==1.7.1+cu110 torchvision==0.8.2+cu110 \
+              --extra-index-url https://download.pytorch.org/whl/cu110
+        - kind: ADD
+          value: https://drive.google.com/uc?id=1Pq0sK-9jmbLAVtgB9-dPDc2pipCxYdM5 /transt.pth
 
   triggers:
     myHttpTrigger:

serverless/pytorch/dschoerk/transt/nuclio/function.yaml

@@ -22,42 +22,28 @@ spec:
 
     directives:
       preCopy:
-        - kind: ENV
-          value: PATH="/root/miniconda3/bin:${PATH}"
-        - kind: ARG
-          value: PATH="/root/miniconda3/bin:${PATH}"
         - kind: RUN
-          value: rm -f /etc/apt/sources.list.d/cuda.list /etc/apt/sources.list.d/nvidia-ml.list
-        - kind: RUN
-          value: apt update && apt install -y --no-install-recommends wget git ca-certificates libglib2.0-0 libgl1 && rm -rf /var/lib/apt/lists/* # libxrender1 libxext6
-        - kind: RUN
-          value: wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh &&
-            chmod +x Miniconda3-latest-Linux-x86_64.sh && bash Miniconda3-latest-Linux-x86_64.sh -b &&
-            rm -f Miniconda3-latest-Linux-x86_64.sh
+          value: |-
+            apt update \
+              && apt install -y --no-install-recommends \
+                git \
+                ca-certificates \
+                python-is-python3 \
+                python3 \
+                python3-pip \
+              && rm -rf /var/lib/apt/lists/*
         - kind: WORKDIR
           value: /opt/nuclio
-        - kind: RUN
-          value: conda create -y -n transt python=3.8
-        - kind: SHELL
-          value: '["conda", "run", "-n", "transt", "/bin/bash", "-c"]'
         - kind: RUN
           value: git clone --depth 1 --branch v1.0 https://github.com/dschoerk/TransT trans-t
-
-        - kind: RUN
-          value: pip install torch==1.7.1+cpu torchvision==0.8.2+cpu torchaudio==0.7.2 -f https://download.pytorch.org/whl/torch_stable.html
-
-        - kind: RUN
-          value: pip install jsonpickle opencv-python
-
-        - kind: RUN
-          value: wget --no-check-certificate 'https://drive.google.com/uc?id=1Pq0sK-9jmbLAVtgB9-dPDc2pipCxYdM5' -O /transt.pth
-
-        - kind: RUN
-          value: apt remove -y git wget
         - kind: RUN
-          value: cd trans-t
-        - kind: ENTRYPOINT
-          value: '["conda", "run", "-n", "transt"]'
+          value: |-
+            pip install \
+              jsonpickle opencv-python-headless \
+              torch==1.7.1+cpu torchvision==0.8.2+cpu \
+              --extra-index-url https://download.pytorch.org/whl/cpu
+        - kind: ADD
+          value: https://drive.google.com/uc?id=1Pq0sK-9jmbLAVtgB9-dPDc2pipCxYdM5 /transt.pth
 
   triggers:
     myHttpTrigger: