move most of docker.jcg.re/caddy to this new image, docker.jcg.re/base-caddy

.drone.yml

@@ -0,0 +1,7 @@
+pipeline:
+        docker:
+                image: plugins/docker
+                repo: docker.jcg.re/base-caddy
+                registry: docker.jcg.re
+                secrets: [ docker_username, docker_password ]
+                tags: latest

Dockerfile

@@ -0,0 +1,31 @@
+FROM docker.jcg.re/base-alpine
+
+
+ENV GOPATH=/gopath 
+
+ONBUILD ADD plugins.txt /plugins
+ONBUILD ARG BRANCH
+ONBUILD ARG CLONE_URL=github.com/mholt/caddy
+ONBUILD RUN apk upgrade --update \
+ && apk add --no-cache -t build-deps \
+      build-base \
+      libcap \
+      go \
+      git \
+ && mkdir -p ${GOPATH}/src/${CLONE_URL} \
+ && cd $GOPATH/src/${CLONE_URL} \
+ && git clone https://${CLONE_URL} . \
+ && git checkout ${BRANCH:-$(git describe --abbrev=0 --tags)} \
+ && cd caddy/caddymain \
+ && export LINE="$(grep -n "// This is where other plugins get plugged in (imported)" < run.go | sed 's/^\([0-9]\+\):.*$/\1/')" \
+ && head -n ${LINE} run.go > newrun.go \
+ && cat /plugins >> newrun.go \
+ && line=`expr ${LINE} + 1` \
+ && tail -n +${LINE} run.go >> newrun.go \
+ && rm -f run.go \
+ && mv newrun.go run.go \
+ && go get ${CLONE_URL}/... \
+ && mv $GOPATH/bin/caddy /usr/bin \
+ && setcap cap_net_bind_service=+ep /usr/bin/caddy \
+ && apk del --purge build-deps \
+ && rm -rf $GOPATH /plugins