update elastalert

elastalert/Dockerfile

@@ -6,19 +6,25 @@ FROM python:3.6-alpine
 
 ENV ELASTALERT_VERSION=v0.2.1
 ENV ELASTALERT_HOME=/opt/elastalert
+ENV TZ=UTC
 
 WORKDIR ${ELASTALERT_HOME}
 
 RUN set -xe \
+    && apk add --no-cache \
+        bash \
+        curl \
+        libffi \
+        libmagic \
+        libssl1.1 \
+        musl \
+        tzdata \
     && apk add --no-cache -t .build-deps \
         build-base \
-        curl \
         libffi-dev \
-        libmagic \
         musl-dev \
         openssl-dev \
-        python-dev \
-        tzdata \
+        python3-dev \
     && pip install elastalert==${ELASTALERT_VERSION} \
     && mkdir -p rules \
     && curl -sSL https://github.com/Yelp/elastalert/raw/${ELASTALERT_VERSION}/config.yaml.example > config.yaml \