re-order Dockerfile stages

Author: amancevice

Dockerfile

@@ -9,16 +9,7 @@ COPY Pipfile* /var/lib/pandas/
 RUN pipenv lock --requirements > requirements.txt
 RUN pipenv lock --requirements --dev > requirements-dev.txt
 
-FROM python:${PYTHON_VERSION}-alpine as alpine
-WORKDIR /var/lib/pandas/
-COPY --from=lock /var/lib/pandas/ .
-RUN apk add --no-cache --virtual .build-deps g++ && \
-    ln -s /usr/include/locale.h /usr/include/xlocale.h && \
-    pip install $(grep numpy requirements.txt) && \
-    pip install -r requirements.txt && \
-    apk del .build-deps
-
-FROM python:${PYTHON_VERSION}-slim AS slim
+FROM python:${PYTHON_VERSION} AS latest
 WORKDIR /var/lib/pandas/
 COPY --from=lock /var/lib/pandas/ .
 RUN pip install $(grep numpy requirements.txt) && \
@@ -30,8 +21,17 @@ COPY --from=lock /var/lib/pandas/ .
 RUN pip install $(grep numpy requirements.txt) && \
     pip install -r requirements.txt -r requirements-dev.txt
 
-FROM python:${PYTHON_VERSION} AS latest
+FROM python:${PYTHON_VERSION}-slim AS slim
 WORKDIR /var/lib/pandas/
 COPY --from=lock /var/lib/pandas/ .
 RUN pip install $(grep numpy requirements.txt) && \
     pip install -r requirements.txt
+
+FROM python:${PYTHON_VERSION}-alpine as alpine
+WORKDIR /var/lib/pandas/
+COPY --from=lock /var/lib/pandas/ .
+RUN apk add --no-cache --virtual .build-deps g++ && \
+    ln -s /usr/include/locale.h /usr/include/xlocale.h && \
+    pip install $(grep numpy requirements.txt) && \
+    pip install -r requirements.txt && \
+    apk del .build-deps

Makefile

@@ -10,10 +10,10 @@ default: $(STAGES)
 	mkdir -p $@
 
 .docker/lock:    Pipfile
-.docker/alpine:  .docker/lock Pipfile.lock
-.docker/slim:    .docker/alpine
-.docker/jupyter: .docker/slim
-.docker/latest:  .docker/jupyter
+.docker/latest:  .docker/jupyter Pipfile.lock
+.docker/jupyter: .docker/latest
+.docker/slim:    .docker/jupyter
+.docker/alpine:  .docker/slim
 .docker/%:     | .docker
 	docker build --iidfile $@ --tag $(REPO):$* --target $* .