Initial commit.

Dockerfile

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+#FROM container4armhf/armhf-alpine
+FROM alpine
+
+MAINTAINER Markus Birth <markus@birth-online.de>
+
+LABEL description="Caddy HTTP/2 web server" \
+      version="1.0"
+
+ENV AGREE_TOS="true" \
+    CADDY_ARCH="amd64" \
+    DEFAULT_EMAIL="changeme@example.com"
+
+COPY ["caddy.d", "/data/caddy.d/"]
+COPY ["compile_and_run.sh", "/usr/local/bin/"]
+
+RUN apk add --update sed wget \
+ && mkdir -p /data/caddy.d \
+ && wget --no-check-certificate -q -O /tmp/caddy.tar.gz "https://caddyserver.com/download/build?os=linux&arch=${CADDY_ARCH}&features=" \
+ && mkdir -p /opt/caddy \
+ && cd /opt/caddy \
+ && tar xzf /tmp/caddy.tar.gz \
+ && rm /tmp/caddy.tar.gz \
+ && chmod a+x /usr/local/bin/compile_and_run.sh \
+ && apk del wget \
+ && rm -rf /var/cache/*
+
+VOLUME ["/data"]
+
+EXPOSE 80 443
+
+CMD ["/usr/local/bin/compile_and_run.sh"]

README.md

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+Caddyserver Proxy
+=================
+
+This is a Docker image with a bare-bones [Caddyserver](https://caddyserver.com/).
+
+It is meant to function as an SSL proxy to your intranet web services.
+
+
+Caddyfiles
+----------
+
+Usually, Caddyserver only supports one single `Caddyfile` for configuration. This
+Docker image contains a script which gathers all `*.caddy` files from the
+`/data/caddy.d/` directory and concatenates them into one `Caddyfile` before
+launching the server.
+
+This way you can keep your configuration clean.
+
+
+Example
+-------
+
+Here is a simple example to proxy my Subsonic via SSL:
+
+```
+subsonic.myhost.com {
+    proxy / http://homeserver:4040/ {
+        proxy_header Host subsonic.myhost.com
+        proxy_header Scheme https
+        # Enable if needed, e.g. for Wetty:
+        #websocket
+    }
+}
+```
+
+This will accept HTTPS connections to subsonic.myhost.com on port 443 and
+forward them to http://homeserver:4040/.
+
+Make sure that each of your configured services has a unique hostname so
+that Caddyserver can distinguish them.
+
+
+Environment Variables
+---------------------
+
+* `CADDY_ARCH` --- CPU architecture to use for Caddy, e.g. `386` or `arm`. Default: `amd64`
+* `DEFAULT_EMAIL` --- The default email address to use for SSL certificate generation.
+  Can be overridden in Caddyfiles with the `tls` directive.
+
+
+Volumes
+-------
+
+* `/data` --- holds the Caddyfiles and Logfile.

caddy.d/000-default.caddy

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+:80 {
+    proxy / http://localhost:81/
+}

compile_and_run.sh

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+#!/bin/sh
+BASEPATH="/data"
+# http://stackoverflow.com/questions/8183191/concatenating-files-and-insert-new-line-in-between-files
+sed -e '$s/$/\n/' -s $BASEPATH/caddy.d/*.caddy > $BASEPATH/Caddyfile
+
+exec /opt/caddy/caddy -agree=${AGREE_TOS} -email="${DEFAULT_EMAIL}" -conf="${BASEPATH}/Caddyfile" -log="${BASEPATH}/caddy.log"