fix(#9): finish multi-stage Dockerfile

Dockerfile

@@ -1,30 +1,22 @@
 # Builder image
-FROM ubuntu:latest as builder
-LABEL authors="lucasliebe"
-
+FROM continuumio/miniconda3 as builder
 
 RUN apt-get update -y && apt-get install default-jre make wget curl unzip build-essential -y
 COPY . /app/unCover
 
-ENV CONDA_DIR /opt/conda
-RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh -O ~/miniconda.sh && /bin/bash ~/miniconda.sh -b -p $CONDA_DIR
-ENV PATH=$CONDA_DIR/bin:$PATH
-
 WORKDIR /app/unCover
+RUN conda update conda --yes
 RUN conda env create -f environment.yml
 RUN cp -n .env.example .env
 RUN make -C tem/topic-evolution-model/
 RUN conda run -n unCover ./corenlp --no-run && conda run -n unCover ./prepare_models
 
 # Final image
-FROM alpine:latest
+FROM continuumio/miniconda3
 LABEL authors="lucasliebe"
 
-#RUN apt-get update -y && apt-get install default-jre
-COPY --from=builder /app/unCover /app/unCover
-ENV CONDA_DIR /opt/conda
-COPY --from=builder $CONDA_DIR $CONDA_DIR
-ENV PATH=$CONDA_DIR/bin:$PATH
+COPY --from=builder /app /app
+COPY --from=builder /opt/conda /opt/conda
 
 WORKDIR /app/unCover
 CMD conda run -n unCover streamlit run main.py