Move to 1.44-beta so postgres compiles with macros

Author: palfrey

Dockerfile

@@ -1,7 +1,8 @@
 FROM alpine:3.11 as builder
 
-RUN apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/community rustup gcc file unixodbc-dev unixodbc-static libltdl-static
-RUN rustup-init -y --default-host x86_64-unknown-linux-musl
+RUN apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/community rustup gcc file unixodbc-dev unixodbc-static libltdl-static musl-dev
+# FIXME: Need beta for https://github.com/rust-lang/rust/pull/69519 but can revert back once 1.44 is released
+RUN rustup-init -y --default-host x86_64-unknown-linux-musl --default-toolchain beta --profile minimal
 ENV PATH=$PATH:/root/.cargo/bin
 
 WORKDIR /app