added alpine build image

.dockerignore

@@ -3,6 +3,7 @@ cmd/drone-server/drone_bindata.go
 dist/
 doc/
 
+.git/
 .dockerignore
 .drone.yml
 .gitignore

Dockerfile.alpine

@@ -0,0 +1,26 @@
+# Docker image for the Drone build runner
+#
+#     docker build --file=Dockerfile.alpine --rm=true -t drone/drone-alpine .
+
+FROM alpine:3.2
+
+EXPOSE 8080
+
+ENV GOROOT=/usr/lib/go \
+    GOPATH=/gopath     \
+    GOBIN=/gopath/bin  \
+    PATH=$PATH:$GOROOT/bin:$GOPATH/bin
+
+WORKDIR /gopath/src/github.com/drone/drone
+ADD . /gopath/src/github.com/drone/drone
+
+RUN apk add -U go ca-certificates libc-dev gcc git sqlite-libs                               && \
+  go get github.com/jteeuwen/go-bindata/...                                                  && \
+  /gopath/bin/go-bindata -o="cmd/drone-server/drone_bindata.go" cmd/drone-server/static/...  && \
+  go run make.go build                                                                       && \
+  apk del git go gcc libc-dev                                                                && \
+  mv bin/drone /bin/drone                                                                    && \
+  rm -rf /gopath                                                                             && \
+  rm -rf /var/cache/apk/*
+
+ENTRYPOINT ["/bin/drone"]

cmd/drone-build/Dockerfile.alpine

@@ -0,0 +1,25 @@
+# Docker image for the Drone build runner
+#
+#     cd $GOPATH/src/github.com/drone/drone
+#     docker build --file=cmd/drone-build/Dockerfile.alpine --rm=true -t drone/drone-build .
+
+FROM alpine:3.2
+
+ENV GOROOT=/usr/lib/go \
+    GOPATH=/gopath     \
+    GOBIN=/gopath/bin  \
+    CGO_ENABLED=0      \
+    PATH=$PATH:$GOROOT/bin:$GOPATH/bin
+
+WORKDIR /gopath/src/github.com/drone/drone
+ADD . /gopath/src/github.com/drone/drone
+
+RUN apk add -U go ca-certificates       && \
+  cd cmd/drone-build                    && \
+  go build -a -tags netgo               && \
+  apk del go                            && \
+  mv drone-build /bin/drone-build       && \
+  rm -rf /gopath                        && \
+  rm -rf /var/cache/apk/*
+
+ENTRYPOINT ["/bin/drone-build"]

cmd/drone-server/drone.go

@@ -241,7 +241,7 @@ func main() {
 	http.Handle("/static/", static())
 	http.Handle("/", r)
 
-	err = http.ListenAndServe(settings.Server.Addr, nil)
+	err = http.ListenAndServe(conf.server.addr, nil)
 	if err != nil {
 		log.Error("Cannot start server: ", err)
 	}

make.go

@@ -154,6 +154,9 @@ func trace(args []string) {
 // helper function to parse the git revision
 func rev() string {
 	cmd := exec.Command("git", "rev-parse", "--short", "HEAD")
-	raw, _ := cmd.CombinedOutput()
+	raw, err := cmd.CombinedOutput()
+	if err != nil {
+		return "HEAD"
+	}
 	return strings.Trim(string(raw), "\n")
 }