Update Dockerfile

Dockerfile

@@ -1,37 +1,38 @@
-FROM python:3-alpine AS base
-
-# Image to Build Dependencies
-FROM base AS builder
-
-WORKDIR /usr/src/app
-
-COPY ./requirements.txt /usr/src/app
-
-# Build Dependencies
-RUN apk --no-cache add gcc musl-dev libffi-dev openssl-dev libxml2-dev libxslt-dev file llvm-dev make g++ cargo rust
-
-# Python Dependencies
-RUN pip install --no-cache-dir --prefix=/install wheel cryptography gunicorn pymysql
-RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
-
-# Runtime Environment Image
-FROM base
-
-WORKDIR /usr/src/app
-
-# Runtime Dependencies
-RUN apk --no-cache add libxml2 libxslt
-COPY --from=builder /install /usr/local
-
-COPY . .
-
-RUN flask db init \
-  && flask db migrate \
-  && flask db upgrade
-
-CMD flask db stamp head \
-  && flask db migrate \
-  && flask db upgrade \
-  && gunicorn -b 0.0.0.0:5000 -w 4 yotter:app
-
-EXPOSE 5000
+FROM python:3-alpine AS base
+
+# Image to Build Dependencies
+FROM base AS builder
+
+WORKDIR /usr/src/app
+
+COPY ./requirements.txt /usr/src/app
+
+# Build Dependencies
+RUN apk --no-cache add gcc musl-dev libffi-dev openssl-dev libxml2-dev libxslt-dev file llvm-dev make g++ cargo rust
+RUN apt-get install build-essential python3-dev
+
+# Python Dependencies
+RUN pip install --no-cache-dir --prefix=/install wheel cryptography gunicorn pymysql
+RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
+
+# Runtime Environment Image
+FROM base
+
+WORKDIR /usr/src/app
+
+# Runtime Dependencies
+RUN apk --no-cache add libxml2 libxslt
+COPY --from=builder /install /usr/local
+
+COPY . .
+
+RUN flask db init \
+  && flask db migrate \
+  && flask db upgrade
+
+CMD flask db stamp head \
+  && flask db migrate \
+  && flask db upgrade \
+  && gunicorn -b 0.0.0.0:5000 -w 4 yotter:app
+
+EXPOSE 5000