Install ca-certificates on image

Dockerfile

@@ -1,4 +1,5 @@
 FROM alpine:3.10
+RUN apk --no-cache add ca-certificates
 RUN wget https://github.com/aleph-engineering/rocketchat-notification/releases/download/1.4.1/rocketchat-notification -P /usr/bin/ && chmod +x /usr/bin/rocketchat-notification
 COPY entrypoint.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -1,3 +1,3 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 echo $1 $2 $3 $4 $5
-rocketchat-notification -u $1 -p $2 -m $3 -s $4 -c $5
+rocketchat-notification -u "$1" -p "$2" -m "$3" -s "$4" -c "$5"