fix locations of 2 executables

Dockerfile

@@ -2,7 +2,7 @@ FROM rocker/r-ubuntu:20.04
 
 LABEL org.opencontainers.image.authors="Aurelien Ginolhac <aurelien.ginolhac@uni.lu>"
 
-# build with docker build -t ginolhac/snake-chip-seq:0.1 - < Dockerfile
+# build with: docker build -t ginolhac/snake-chip-seq:0.1 - < Dockerfile
 # docker push ginolhac/snake-chip-seq:0.1
 
 LABEL version="0.1"
@@ -79,7 +79,7 @@ ARG PRESEQ_VERSION="3.1.2"
 RUN cd /opt && \
     wget --no-check-certificate https://github.com/smithlabcode/preseq/releases/download/v${PRESEQ_VERSION}/preseq-${PRESEQ_VERSION}.tar.gz && \
     tar -xf preseq-${PRESEQ_VERSION}.tar.gz && rm preseq-${PRESEQ_VERSION}.tar.gz && \
-    cd preseq-${PRESEQ_VERSION} && ./configure --prefix=/usr/local/bin && make && make install && make clean
+    cd preseq-${PRESEQ_VERSION} && ./configure --prefix=/usr/local/ && make && make install && make clean
 
 # HOMER
 RUN mkdir /opt/HOMER && cd /opt/HOMER && \
@@ -145,7 +145,7 @@ RUN cd /opt && \
     tar -xf ${PHANTOMPEAKQUALTOOLS_VERSION}.tar.gz && rm ${PHANTOMPEAKQUALTOOLS_VERSION}.tar.gz && \
     cd phantompeakqualtools-${PHANTOMPEAKQUALTOOLS_VERSION} && \
     wget https://github.com/hms-dbmi/spp/archive/1.15.2.tar.gz && \
-    Rscript -e 'install.packages("1.15.2.tar.gz")' && ln -s phantompeakqualtools-1.2.2/run_spp.R /usr/local/bin/
+    Rscript -e 'install.packages("1.15.2.tar.gz")' && ln -s /opt/phantompeakqualtools-1.2.2/run_spp.R /usr/local/bin/
 
     # clean up
 RUN apt-get clean && \