ci/docker: install alsa library

Author: hyperblast

ci/docker/ubuntu-14.04.dockerfile

@@ -12,7 +12,7 @@ COPY ./site-config.jam /etc/
 RUN apt-get update && \
     apt-get upgrade -y && \
     apt-get install -y \
-        tzdata software-properties-common build-essential file curl git zlib1g-dev && \
+        tzdata software-properties-common libasound2 build-essential file curl git zlib1g-dev && \
     add-apt-repository -y ppa:ubuntu-toolchain-r/test && \
     apt-get update && \
     apt-get install -y gcc-9 g++-9 && \

ci/docker/ubuntu-22.04.dockerfile

@@ -5,7 +5,7 @@ ARG DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && \
     apt-get upgrade -y && \
     apt-get install -y \
-        tzdata build-essential file curl git cmake nodejs yarnpkg zlib1g-dev && \
+        tzdata libasound2 build-essential file curl git cmake nodejs yarnpkg zlib1g-dev && \
     ln -s /usr/bin/yarnpkg /usr/bin/yarn && \
     git config --global --add safe.directory /work