Add arg to install LS via OPAM when building image (#5233)

Dockerfile

@@ -35,6 +35,7 @@ RUN chmod a+x /bd_build/*.sh \
     && /bd_build/cleanup.sh
 
 # Build each set of dependencies in their own step for cacheability.
+ARG ARM_FULL_BUILD
 COPY ./util/docker/stations /bd_build/stations/
 RUN bash /bd_build/stations/setup.sh \
     && bash /bd_build/cleanup.sh \

docker-compose.dev.yml

@@ -2,6 +2,10 @@ services:
   web:
     build:
       context: .
+      # Control wether Liquidsoap should be built from source via OPAM or download the
+      # pre-built .deb file from the Liquidsoap GitHub Releases on ARM based machines
+      # args:
+      #   ARM_FULL_BUILD: true
     ports:
       - "127.0.0.1:3306:3306"
       - "127.0.0.1:6379:6379"

util/docker/stations/setup/liquidsoap.sh

@@ -15,8 +15,9 @@ $minimal_apt_get_install frei0r-plugins-dev ladspa-sdk multimedia-audio-plugins
 
 # Per-architecture LS installs
 ARCHITECTURE=amd64
+ARM_FULL_BUILD="${ARM_FULL_BUILD:-false}"
 
-if [ "$(uname -m)" = "aarch64" ]; then
+if [[ "$(uname -m)" = "aarch64" && ${ARM_FULL_BUILD} == "false" ]]; then
     ARCHITECTURE=arm64
 
     wget -O /tmp/liquidsoap.deb "https://github.com/savonet/liquidsoap/releases/download/v2.0.3/liquidsoap_2.0.3-ubuntu-focal-2_${ARCHITECTURE}.deb"