Docker image builds correctly

Dockerfile

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+FROM python:2.7
+
+# Install Git LFS
+RUN echo 'deb http://http.debian.net/debian stretch-backports main' > /etc/apt/sources.list.d/stretch-backports-main.list && \
+	curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | bash && \
+	apt-get -y update && \
+	apt-get -y install git-lfs && \
+	git lfs install
+
+# ============================================= #
+# Clone the datasets and projects' repositories #
+# ============================================= #
+
+# Dataset
+RUN git clone https://github.com/collab-uniba/EMTK_datasets.git datasets
+
+# Emotions
+RUN git clone https://github.com/collab-uniba/Emotion_and_Polarity_SO.git emotions
+RUN wget -P /emotions/java/lib http://nlp.stanford.edu/software/stanford-corenlp-models-current.jar
+
+# Polarity
+RUN git lfs clone https://github.com/collab-uniba/Senti4SD.git polarity
+
+
+# ====== #
+# PYTHON #
+# ====== #
+
+# Install python requirements
+COPY requirements.txt /
+RUN pip install --upgrade pip && \
+    pip install -r /requirements.txt
+RUN python -m nltk.downloader all
+RUN rm requirements.txt
+
+
+# ==== #
+# JAVA #
+# ==== #
+
+# Install Java 8 JRE
+RUN apt-get -y update && \
+    apt-get -y install default-jre
+
+
+# ====== #
+# R-base #
+# ====== #
+
+# Install R
+RUN apt-get -y update && \
+    apt-get -y install r-base
+
+# Install R requirements
+COPY requirements.R /
+RUN Rscript requirements.R
+RUN rm requirements.R
+
+# ========== #
+# ENTRYPOINT #
+# ========== #
+
+# Copy the main bash script onto the image and make it a command
+COPY ./emtk /
+RUN ln -s /emtk /usr/bin/emtk
+
+# Run the bash inside the container when it starts
+ENTRYPOINT [ "/bin/bash" ]

emtk

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+#!/bin/bash
+
+module=$1
+if [ $module = "polarity" ]
+then
+    # POLARITY MODULE
+    cd ./polarity/ClassificationTask/
+    exec sh classificationTask.sh ${@:2}
+
+elif [ $module = "emotions" ]
+then
+    # EMOTIONS MODULE
+    task=$2
+
+    if [ $task = "train" ]
+    then
+
+        # Train
+        cd ./emotions
+        exec sh train.sh ${@:3}
+    elif [ $task = "classify" ]
+    then
+
+        # Classify
+        cd ./emotions
+        exec sh classify.sh ${@:3}
+    else
+        # wrong/missing task name
+        echo "Check the first argument after 'emotions':"
+        echo "There is no task named '$1'!"
+    fi
+
+else
+    # WRONG/MISSING MODULE NAME
+    echo "Check the first argument after './emtk.sh':"
+    echo "There is no module named '$1'!"
+fi

requirements.R

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+#check if caret is present
+#if not, it will be installed
+if(!require("caret", quietly = TRUE)) {
+	install.packages(c("caret"), dependencies = c("Imports", "Depends","LinkingTo"), repos = "http://cran.mirror.garr.it/mirrors/CRAN/")
+}
+
+#check if LiblineaR is present
+#if not, it will be installed
+if(!require("LiblineaR", quietly = TRUE)) {
+	install.packages(c("LiblineaR"), dependencies = c("Imports", "Depends","LinkingTo"), repos = "http://cran.mirror.garr.it/mirrors/CRAN/")
+}
+
+#check if e1071 is present
+#if not, it will be installed
+if(!require("e1071", quietly = TRUE)) {
+	install.packages(c("e1071"), dependencies = c("Imports", "Depends","LinkingTo"), repos = "http://cran.mirror.garr.it/mirrors/CRAN/")
+}
+

requirements.txt

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+scipy==0.12.0
+numpy==1.9.0
+scikit-learn==0.15.1
+nltk==3.0.0
+pattern==2.6
+nose==1.3.7