Move to Ubuntu base image due to musl-related build errors

Dockerfile

-FROM alpine as builder
+FROM ubuntu as builder
 
 ENV TDLIB_VERSION=1.5.0
 
-RUN apk update && apk add gperf alpine-sdk openssl-dev git cmake zlib-dev linux-headers
+RUN apt-get update && apt-get -y install gperf cmake git zlib1g-dev linux-headers-generic g++ libssl-dev
 
 WORKDIR /tmp/_build_tdlib/
 
@@ -16,11 +16,13 @@ RUN cmake --build .
 RUN make install
 RUN rm -rf /tmp/_build_tdlib/
 
-FROM alpine
+FROM ubuntu
 
 LABEL maintainer="vladimir@hodakov.me"
 
-RUN apk update && apk add --no-cache gperf openssl-dev git cmake zlib-dev
+RUN apt-get update && apt-get -y install libssl-dev cmake zlib1g-dev g++
+
+RUN apt-get clean autoclean && apt-get autoremove --yes && rm -rf /var/lib/apt/lists/*
 
 COPY --from=builder /usr/local/include/td /usr/local/include/td
 COPY --from=builder /usr/local/lib/libtd* /usr/local/lib/