switch to python3 versions of packages

many python2 versions of packages are no longer in ubuntu 20.04

Dockerfile

@@ -170,7 +170,7 @@ RUN apt-get update && \
    software-properties-common \
    libgdal-dev \
    build-essential \
-   python-dev \
+   python3-dev \
    python3-pip \
    python3-numpy \
    python3-matplotlib \
@@ -255,16 +255,10 @@ RUN Rscript -e "install.packages(pkgs = c('coin'), \
     dependencies=TRUE)"
 
 # python libraries: rpy2 (v. 2.1 or higher), numpy, matplotlib (v. 1.0 or higher), argparse 
-RUN apt-get update && \
-   apt-get -yq install \
-   python-rpy2
-
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-    python-h5py
-
 RUN apt-get update && \
    apt-get install -y --no-install-recommends \
+   python3-rpy2 \
+   python3-h5py \
    nano \
    jed
 
@@ -280,11 +274,6 @@ RUN mkdir -p $MANUAL_BIN && \
 
 # USER $RSTUDIO_USER
 
-RUN apt-get update && \
-    apt-get install -yq --no-install-recommends \
-    python-h5py
-
-
 ##------------------------------------------------------------
 # install fastq-mcf and fastq-multx from source since apt-get install causes problems
 RUN mkdir -p /usr/bin && \
@@ -382,6 +371,7 @@ RUN mkdir kaiju && \
    tar -zx -C kaiju --strip-components=1 && \
    cd kaiju/src && \
    make && \
+   cd ../..  && \
    mv kaiju/bin/* $MANUAL_BIN  && \
    rm -rf kaiju