build dockerfile

Signed-off-by: Frank Villaro-Dixon <frank@villaro-dixon.eu>

.dockerignore

@@ -0,0 +1,2 @@
+.git
+target

.forgejo/workflows/build.yml

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+name: ci
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - '*'
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Forge Hub
+        uses: docker/login-action@v3
+        with:
+          registry: forge.k3s.fr
+          username: ${{ secrets.FORGEHUB_USERNAME }}
+          password: ${{ secrets.FORGEHUB_PASSWORD }}
+      - name: Extract metadata (tags, labels) for Forge hub
+        id: metaforge
+        uses: https://github.com/docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: forge.k3s.fr/frank/opentsdb-auth-proxy
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.metaforge.outputs.tags }}
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: Extract metadata (tags, labels) for Dockerhub
+        id: metadockerhub
+        uses: https://github.com/docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: frankkkkk/opentsdb-auth-proxy
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.metadockerhub.outputs.tags }}

Dockerfile

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+FROM rust:1.78 AS chef
+# We only pay the installation cost once,
+# it will be cached from the second build onwards
+RUN cargo install cargo-chef
+WORKDIR app
+
+FROM chef AS planner
+COPY . .
+RUN cargo chef prepare  --recipe-path recipe.json
+
+FROM chef AS builder
+COPY --from=planner /app/recipe.json recipe.json
+# Build dependencies - this is the caching Docker layer!
+RUN cargo chef cook --release --recipe-path recipe.json
+# Build application
+COPY . .
+RUN cargo build --release --bin opentsdb-auth-proxy
+
+# We do not need the Rust toolchain to run the binary!
+FROM ubuntu:22.04
+WORKDIR app
+COPY --from=builder /app/target/release/opentsdb-auth-proxy /usr/local/bin
+ENTRYPOINT ["/usr/local/bin/opentsdb-auth-proxy"]

README.md

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 To be implemented; but don't do it.
 
+
+## Environment variables
+
+The following env variables are supported:
+
+- `CONFIG_FILE` : the location of the config file
+- `OPENTSDB_URL` (in this case, don't set it in the config file)
+
 ## Notes about exposing OpenTSDB
 
 Currently, OpenTSDB does not support authentication. If you run opentsdb in a k8s