[miniconda] Remove the USER instruction to fix issue with miniconda template (devcontainers#563)

* [miniconda] Remove `USER` instruction

- Remove `USER` instruction to make sure that all subsequent commands running form the root user

* [miniconda] Backport conda-forge checks

Author: alexander-smolyakov

src/miniconda/.devcontainer/Dockerfile

@@ -47,8 +47,6 @@ COPY environment.yml* noop.txt /tmp/conda-tmp/
 RUN if [ -f "/tmp/conda-tmp/environment.yml" ]; then umask 0002 && /opt/conda/bin/conda env update -n base -f /tmp/conda-tmp/environment.yml; fi \
     && rm -rf /tmp/conda-tmp
 
-USER vscode
-
 # Temporary: Upgrade python packages due to mentioned CVEs
 # They are installed by the base image (continuumio/miniconda3) which does not have the patch.
 RUN python3 -m conda update -y \

src/miniconda/test-project/test.sh

@@ -22,6 +22,8 @@ cryptography_version=$(python -c "import cryptography; print(cryptography.__vers
 check-version-ge "cryptography-requirement" "${cryptography_version}" "38.0.3"
 
 check "conda-update-conda" bash -c "conda update -y conda"
+check "conda-install" bash -c "conda install -c conda-forge --yes tensorflow"
+check "conda-install" bash -c "conda install -c conda-forge --yes pytorch"
 
 setuptools_version=$(python -c "import setuptools; print(setuptools.__version__)")
 check-version-ge "setuptools-requirement" "${setuptools_version}" "65.5.1"