🎉 libsrt got packaged in community's Alpine Linux repo, FFMPEG is compiled with libsrt, so we use Alpine Linux

.gitlab-ci.yml

@@ -6,8 +6,7 @@ unit_tests:
   image: golang:1.15-alpine
   stage: test
   before_script:
-    - apk add --no-cache build-base gcc
-    - apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/testing libsrt-dev
+    - apk add --no-cache -X http://dl-cdn.alpinelinux.org/alpine/edge/community build-base ffmpeg gcc libsrt-dev
   script:
     - go test -v -covermode=count -coverprofile cover.cov ./...
     - go tool cover -func=cover.cov

Dockerfile

@@ -1,19 +1,17 @@
 # Install dependencies then build ghostream
-FROM debian:bullseye-slim AS build_base
-RUN apt-get update && \
-        apt-get install -y --no-install-recommends ca-certificates \
-        gcc golang libc6-dev libsrt1 libsrt-openssl-dev musl-dev
+FROM golang:1.15-alpine AS build_base
+RUN apk add --no-cache gcc libsrt-dev musl-dev
 WORKDIR /code
 COPY go.* ./
 RUN go mod download && go get github.com/markbates/pkger/cmd/pkger
 COPY . .
-RUN PATH=/root/go/bin:$PATH go generate && go build -o ./out/ghostream .
+RUN go generate && go build -o ./out/ghostream .
 
 # Production image
-FROM debian:bullseye-slim
-RUN apt-get update && apt-get install -y ffmpeg libsrt1 musl
+FROM alpine:3.12
+RUN apk add ffmpeg libsrt
 COPY --from=build_base /code/out/ghostream /app/ghostream
 WORKDIR /app
-# 9710 (UDP) for SRT, 8080 for Web, 2112 for monitoring and 10000-10005 (UDP) for WebRTC
+# 9710 for SRT, 8080 for Web, 2112 for monitoring and 10000-10005 (UDP) for WebRTC
 EXPOSE 9710/udp 8080 2112 10000-10005/udp
 CMD ["/app/ghostream"]

Dockerfile.bullseye

@@ -0,0 +1,19 @@
+# Install dependencies then build ghostream
+FROM debian:bullseye-slim AS build_base
+RUN apt-get update && \
+        apt-get install -y --no-install-recommends ca-certificates \
+        gcc golang libc6-dev libsrt1 libsrt-openssl-dev musl-dev
+WORKDIR /code
+COPY go.* ./
+RUN go mod download && go get github.com/markbates/pkger/cmd/pkger
+COPY . .
+RUN PATH=/root/go/bin:$PATH go generate && go build -o ./out/ghostream .
+
+# Production image
+FROM debian:bullseye-slim
+RUN apt-get update && apt-get install -y ffmpeg libsrt1 musl
+COPY --from=build_base /code/out/ghostream /app/ghostream
+WORKDIR /app
+# 9710 (UDP) for SRT, 8080 for Web, 2112 for monitoring and 10000-10005 (UDP) for WebRTC
+EXPOSE 9710/udp 8080 2112 10000-10005/udp
+CMD ["/app/ghostream"]