adding a Dockerfile for Debian Bullseye

Dockerfile.debian

@@ -0,0 +1,81 @@
+# Build Pype docker image
+FROM debian:bullseye AS builder
+ARG OPENPYPE_PYTHON_VERSION=3.7.12
+ARG BUILD_DATE
+ARG VERSION
+
+LABEL maintainer="info@openpype.io"
+LABEL description="Docker Image to build and run OpenPype under Ubuntu 20.04"
+LABEL org.opencontainers.image.name="pypeclub/openpype"
+LABEL org.opencontainers.image.title="OpenPype Docker Image"
+LABEL org.opencontainers.image.url="https://openpype.io/"
+LABEL org.opencontainers.image.source="https://github.com/pypeclub/OpenPype"
+LABEL org.opencontainers.image.documentation="https://openpype.io/docs/system_introduction"
+LABEL org.opencontainers.image.created=$BUILD_DATE
+LABEL org.opencontainers.image.version=$VERSION
+
+USER root
+
+ARG DEBIAN_FRONTEND=noninteractive
+
+# update base
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    bash \
+    git \
+    cmake \
+    make \
+    curl \
+    wget \
+    build-essential \
+    libssl-dev \
+    zlib1g-dev \
+    libbz2-dev \
+    libreadline-dev \
+    libsqlite3-dev \
+    llvm \
+    libncursesw5-dev \
+    xz-utils \
+    tk-dev \
+    libxml2-dev \
+    libxmlsec1-dev \
+    libffi-dev \
+    liblzma-dev \
+    patchelf
+
+SHELL ["/bin/bash", "-c"]
+
+
+RUN mkdir /opt/openpype
+
+# download and install pyenv
+RUN curl https://pyenv.run | bash \
+    && echo 'export PATH="$HOME/.pyenv/bin:$PATH"'>> $HOME/init_pyenv.sh \
+    && echo 'eval "$(pyenv init -)"' >> $HOME/init_pyenv.sh \
+    && echo 'eval "$(pyenv virtualenv-init -)"' >> $HOME/init_pyenv.sh \
+    && echo 'eval "$(pyenv init --path)"' >> $HOME/init_pyenv.sh
+
+# install python with pyenv
+RUN source $HOME/init_pyenv.sh \
+    && pyenv install ${OPENPYPE_PYTHON_VERSION}
+
+COPY . /opt/openpype/
+
+RUN chmod +x /opt/openpype/tools/create_env.sh && chmod +x /opt/openpype/tools/build.sh
+
+WORKDIR /opt/openpype
+
+# set local python version
+RUN cd /opt/openpype \
+    && source $HOME/init_pyenv.sh \
+    && pyenv local ${OPENPYPE_PYTHON_VERSION}
+
+# fetch third party tools/libraries
+RUN source $HOME/init_pyenv.sh \
+    && ./tools/create_env.sh \
+    && ./tools/fetch_thirdparty_libs.sh
+
+# build openpype
+RUN source $HOME/init_pyenv.sh \
+    && bash ./tools/build.sh