Separate dockerfiles into a base and app file

engines/real-time-ensembler/Dockerfile

@@ -10,24 +10,4 @@ RUN conda env create -f ./environment.yaml &&  \
     rm -rf /root/.cache
 
 # Install conda-pack:
-RUN conda install -c conda-forge conda-pack
-
-# Use conda-pack to create a standalone enviornment
-# in /venv:
-RUN conda-pack -n real-time-ensembler -o /tmp/env.tar && \
-  mkdir /venv && cd /venv && tar xf /tmp/env.tar && \
-  rm /tmp/env.tar
-
-RUN /venv/bin/conda-unpack
-
-FROM debian:latest
-
-COPY --from=builder /ensembler ./ensembler
-COPY --from=builder /pyfunc_ensembler_runner ./pyfunc_ensembler_runner
-COPY --from=builder /run.sh /run.sh
-COPY --from=builder /venv /venv
-
-RUN /bin/bash -c ". /venv/bin/activate && \
-    python -m pyfunc_ensembler_runner --mlflow_ensembler_dir /ensembler --dry_run"
-
-CMD ["/bin/bash", "./run.sh"]
+RUN conda install -c conda-forge conda-pack

engines/real-time-ensembler/app.Dockerfile

@@ -0,0 +1,30 @@
+ARG BASE_IMAGE
+
+FROM ${BASE_IMAGE} as builder
+
+ARG MODEL_URL
+RUN gsutil -m cp -r ${MODEL_URL} .
+ARG FOLDER_NAME
+
+# Install dependencies required by the user-defined ensembler
+RUN /bin/bash -c ". activate ${CONDA_ENVIRONMENT} && conda env update --name ${CONDA_ENVIRONMENT} --file /${HOME}/${FOLDER_NAME}/conda.yaml"
+
+# Use conda-pack to create a standalone enviornment
+# in /venv:
+RUN conda-pack -n real-time-ensembler -o /tmp/env.tar && \
+  mkdir /venv && cd /venv && tar xf /tmp/env.tar && \
+  rm /tmp/env.tar
+
+RUN /venv/bin/conda-unpack
+
+FROM debian:latest
+
+COPY --from=builder /ensembler ./ensembler
+COPY --from=builder /pyfunc_ensembler_runner ./pyfunc_ensembler_runner
+COPY --from=builder /run.sh /run.sh
+COPY --from=builder /venv /venv
+
+RUN /bin/bash -c ". /venv/bin/activate && \
+    python -m pyfunc_ensembler_runner --mlflow_ensembler_dir /ensembler --dry_run"
+
+CMD ["/bin/bash", "./run.sh"]