Initial commit

.dockerignore

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+.env

.github/docker-compose.gha.yml

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+services:
+  tunmgr:
+    build:
+      cache_from:
+        - type=gha
+      cache_to:
+        - type=gha,mode=max

.github/workflows/build.yml

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+name: Build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Expose GitHub Runtime
+        uses: crazy-max/ghaction-github-runtime@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: latest
+      - name: Build and push Docker image
+        run: |
+          docker buildx bake \
+            -f docker-compose.yml \
+            -f .github/docker-compose.gha.yml \
+            --push tunmgr

.gitignore

@@ -0,0 +1 @@
+.env

Dockerfile

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+FROM --platform=$BUILDPLATFORM golang:1.23-alpine AS builder
+
+ENV CGO_ENABLED=0
+
+WORKDIR /usr/src/app
+
+COPY go.* .
+
+RUN --mount=type=cache,target=/go/pkg/,rw \
+  --mount=type=cache,target=/root/.cache/,rw \
+  go mod download
+
+COPY . .
+
+ARG TARGETOS
+ARG TARGETARCH
+
+ENV GOOS=${TARGETOS} GOARCH=${TARGETARCH}
+
+RUN --mount=type=cache,target=/go/pkg/,rw \
+  --mount=type=cache,target=/root/.cache/,rw \
+  go build -o tunmgr .
+
+FROM alpine
+
+RUN apk add --no-cache curl
+
+COPY --from=builder /usr/src/app/tunmgr /tunmgr
+
+ENTRYPOINT [ "/tunmgr" ]

LICENSE

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+MIT License
+
+Copyright (c) 2022 pico.sh LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# tunmgr
+
+A tunnel manager for docker services
+
+This tool utilizes [tun.sh](https://tuns.sh) as its tunnel provider. You can self-host [sish](https://docs.ssi.sh) as well.
+
+tunmgr automatically set's up tunnels for docker services. It utilizes `Exposed`'d ports as well as `DNSNames` (and the container name/id) to setup different permutations of tunnels.
+
+You can also disable the docker based system by setting `-docker-events=false`. Doing this would then only setup tunnels set with a `-tunnel` setting, following the same syntax as `ssh -R`.
+
+## Example
+
+```yaml
+services:
+  tunmgr:
+    image: ghcr.io/picosh/tunmgr:latest
+    restart: always
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - $HOME/.ssh/id_ed25519_pico_antonio:/key:ro
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
+      interval: 2s
+      timeout: 5s
+      retries: 5
+      start_period: 1s
+  httpbin:
+    image: kennethreitz/httpbin
+    depends_on:
+      tunmgr:
+        condition: service_healthy
+    # labels: # or provide tunnel names and ports explicitly
+    #   tunmgr.names: httpbin # Comma separated list of names. Can be an empty
+    #   tunmgr.ports: 80:80 $ Comma separated list of port maps. (remote:local)
+    command: gunicorn -b 0.0.0.0:80 httpbin:app -k gevent --access-logfile -
+```
+
+Auto tunnels will be established for:
+
+1. [https://antonio-ce37a3511391.tuns.sh](https://tuns.sh)
+2. [https://antonio-httpbin.tuns.sh](https://tuns.sh)
+3. [https://antonio-tunmgr-httpbin-1.tuns.sh](https://tuns.sh)

docker-compose.yml

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+services:
+  tunmgr:
+    build:
+      context: .
+    image: ghcr.io/picosh/tunmgr:latest
+    restart: always
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - $HOME/.ssh/id_ed25519_pico_antonio:/key:ro
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
+      interval: 2s
+      timeout: 5s
+      retries: 5
+      start_period: 1s
+  httpbin:
+    image: kennethreitz/httpbin
+    depends_on:
+      tunmgr:
+        condition: service_healthy
+    # labels: # or provide tunnel names and ports explicitly
+    #   tunmgr.names: httpbin # Comma separated list of names. Can be an empty
+    #   tunmgr.ports: 80:80 $ Comma separated list of port maps. (remote:local)
+    command: gunicorn -b 0.0.0.0:80 httpbin:app -k gevent --access-logfile -

go.mod

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+module github.com/picosh/tunmgr
+
+go 1.23.0
+
+require (
+	github.com/antoniomika/syncmap v1.0.0
+	github.com/docker/docker v27.2.0+incompatible
+	github.com/google/uuid v1.6.0
+	golang.org/x/crypto v0.26.0
+)
+
+require (
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-connections v0.5.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.54.0 // indirect
+	go.opentelemetry.io/otel v1.29.0 // indirect
+	go.opentelemetry.io/otel/metric v1.29.0 // indirect
+	go.opentelemetry.io/otel/trace v1.29.0 // indirect
+	golang.org/x/sys v0.24.0 // indirect
+)

go.sum

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