diff --git a/Dockerfile b/Dockerfile index 6be469b..096c394 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,12 +1,18 @@ -FROM golang:1.22 +FROM golang:1.23 AS compile WORKDIR /usr/src/app -# pre-copy/cache go.mod for pre-downloading dependencies and only redownloading them in subsequent builds if they change -# COPY go.mod go.sum ./ -# RUN go mod download && go mod verify - COPY . . -RUN go build -v -o /usr/local/bin/app ./... +RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /app ./... -CMD ["app"] +FROM alpine:latest AS compressor +RUN apk add --no-cache upx +COPY --from=compile /app /app +RUN upx --best /app + +FROM scratch AS service + +COPY --from=compile /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ +COPY --from=compressor /app . + +ENTRYPOINT ["/app"] diff --git a/README.md b/README.md index 22814ed..d04175f 100644 --- a/README.md +++ b/README.md @@ -1,5 +1,12 @@ # Dynamic DNS Updates with Cloudflare +> [!NOTE] +> This program was originally written by [mxmlndml]. This fork merely +> optimizes the docker image with better (more optimized) compiles flags +> and strips out the entire Go runtime from the final image (making the final +> image <3MB instead of ~900MB). Go thank him for his work developing this, not +> me ;) + ![cloudflare-dynamic-dns](https://github.com/mxmlndml/cloudflare-dynamic-dns/assets/42516330/fc6e7c3e-eb96-4fdf-924e-cf86dab70b4b) This Docker container offers a straightforward and efficient solution for @@ -24,7 +31,7 @@ pulling the pre-built Docker container and running it with the necessary environment variables ```sh -docker run -d -e API_KEY=123 -e ZONE_ID=023e105f4ecef8ad9ca31a8372d0c353 -e DOMAIN_NAMES=example.com,*.example.com mxmlndml/cloudflare-dynamic-dns +docker run -d -e API_KEY=123 -e ZONE_ID=023e105f4ecef8ad9ca31a8372d0c353 -e DOMAIN_NAMES=example.com,*.example.com chaussebenjamin/cloudflare-dynamic-dns ``` Alternatively you can copy the `docker-compose.yml` and `.env.template` from this repository into an @@ -64,3 +71,5 @@ breakdown of the available configuration variables: - **`INTERVAL`** _defaults to `5`_ \ Time interval in minutes between DNS updates + +[1]: github.com/mxmlndml/cloudflare-dynamic-dns diff --git a/docker-compose.yml b/docker-compose.yml index 8ec1164..34d2c81 100644 --- a/docker-compose.yml +++ b/docker-compose.yml @@ -1,9 +1,10 @@ +--- services: cloudflare-dynamic-dns: - image: mxmlndml/cloudflare-dynamic-dns:latest + image: chaussebenjamin/cloudflare-dynamic-dns:latest environment: - - "API_KEY=${API_KEY}" - - "ZONE_ID=${ZONE_ID}" - - "DOMAIN_NAMES=example.com,dyndns.example.com" + - API_KEY=${API_KEY} + - ZONE_ID=${ZONE_ID} + - DOMAIN_NAMES=example.com,dyndns.example.com # - "RECORD_TYPES=A" # - "INTERVAL=5" diff --git a/main.go b/main.go index 7d52cb8..15a75e8 100644 --- a/main.go +++ b/main.go @@ -1,6 +1,7 @@ package main import ( + _ "embed" "fmt" "log" "strings" @@ -8,6 +9,9 @@ import ( "time" ) +//go:embed title.txt +var appNameASCII string + type publicIP struct { v4 string v6 string @@ -60,11 +64,7 @@ func getDNSRecords() []DNSRecords { } func initialize() { - fmt.Println(" _______ _______ ___ _ ___ _ ______") - fmt.Println(" / ___/ /__ __ _____/ / _/ /__ ________ / _ \\__ _____ ___ ___ _ (_)___ / _ \\/ |/ / __/") - fmt.Println("/ /__/ / _ \\/ // / _ / _/ / _ `/ __/ -_) / // / // / _ \\/ _ `/ ' \\/ / __/ / // / /\\ \\ ") - fmt.Println("\\___/_/\\___/\\_,_/\\_,_/_//_/\\_,_/_/ \\__/ /____/\\_, /_//_/\\_,_/_/_/_/_/\\__/ /____/_/|_/___/ ") - fmt.Println(" /___/ ") + fmt.Print(appNameASCII) var recordType string if UseIPv4() && UseIPv6() { diff --git a/title.txt b/title.txt new file mode 100644 index 0000000..06eeff2 --- /dev/null +++ b/title.txt @@ -0,0 +1,5 @@ + _______ _______ ___ _ ___ _ ______ + / ___/ /__ __ _____/ / _/ /__ ________ / _ \__ _____ ___ ___ _ (_)___ / _ \/ |/ / __/ + / /__/ / _ \/ // / _ / _/ / _ `/ __/ -_) / // / // / _ \/ _ `/ ' \/ / __/ / // / /\ \ + \___/_/\___/\_,_/\_,_/_//_/\_,_/_/ \__/ /____/\_, /_//_/\_,_/_/_/_/_/\__/ /____/_/|_/___/ + /___/