docker: use jfa-go-build-docker for quicker builds

we already make the prerequisite container, why not use it for docker
builds as well?

Dockerfile

@@ -1,15 +1,17 @@
-FROM --platform=$BUILDPLATFORM golang:latest AS support
+# Use this instead if hrfee/jfa-go-build-docker doesn't support your architecture
+# FROM --platform=$BUILDPLATFORM golang:latest AS support
+FROM --platform=$BUILDPLATFORM hrfee/jfa-go-build-docker AS support
 
 COPY . /opt/build
 
-RUN apt-get update -y \
+# Uncomment this if hrfee/jfa-go-build-docker doesn't support your architecture
-    && apt-get install build-essential python3-pip curl software-properties-common sed -y \
+# RUN apt-get update -y \
-    && (curl -sL https://deb.nodesource.com/setup_current.x | bash -) \
+#     && apt-get install build-essential python3-pip -y \
-    && apt-get install nodejs \
+#     && (curl -sL https://deb.nodesource.com/setup_current.x | bash -) \
-    && (cd /opt/build; make configuration npm email typescript variants-html bundle-css inline-css swagger copy INTERNAL=off GOESBUILD=on) \
+#     && apt-get install nodejs
+RUN (cd /opt/build; make configuration npm email typescript variants-html bundle-css inline-css swagger copy INTERNAL=off GOESBUILD=on) \
     && sed -i 's#id="password_resets-watch_directory" placeholder="/config/jellyfin"#id="password_resets-watch_directory" value="/jf" disabled#g' /opt/build/build/data/html/setup.html
 
-
 FROM --platform=$BUILDPLATFORM golang:latest AS build
 ARG TARGETARCH
 ENV GOARCH=$TARGETARCH