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build: Add alpine-based docker image #17

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12 changes: 12 additions & 0 deletions Dockerfile.alpine
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Original file line number Diff line number Diff line change
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FROM alpine

RUN apk add --no-cache icecast mailcap
RUN mkdir /etc/icecast \
&& chown icecast:icecast /etc/icecast

ADD ./start-alpine.sh /start.sh
USER icecast

EXPOSE 8000
VOLUME ["/var/log/icecast"]
CMD ["/start.sh"]
26 changes: 26 additions & 0 deletions start-alpine.sh
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#!/bin/sh

env

set -x

set_val() {
if [ -n "$2" ]; then
echo "set '$2' to '$1'"
sed -i "s/<$2>[^<]*<\/$2>/<$2>$1<\/$2>/g" /etc/icecast/icecast.xml
else
echo "Setting for '$1' is missing, skipping." >&2
fi
}

cp /etc/icecast.xml /etc/icecast/

set_val $ICECAST_SOURCE_PASSWORD source-password
set_val $ICECAST_RELAY_PASSWORD relay-password
set_val $ICECAST_ADMIN_PASSWORD admin-password
set_val $ICECAST_PASSWORD password
set_val $ICECAST_HOSTNAME hostname

set -e

icecast -c /etc/icecast/icecast.xml