doc/release.md: Document release process (#373)

Signed-off-by: Max Inden <[email protected]>

Author: mxinden

docs/release.md

@@ -0,0 +1,63 @@
+# Release process
+
+## Crate prometheus
+
+1. Create pull request with bumped `version` in `Cargo.toml` and updated `CHANGELOG.md`.
+
+2. Once merged clean your local environment.
+
+  ```bash
+  cargo clean
+  git clean -fd
+  ```
+  
+3. Tag the release.
+
+  ```bash
+  tag="v$(sed -En 's/^version = \"(.*)\"$/\1/p' Cargo.toml)"
+  git tag -s "${tag}" -m "${tag}"
+  ```
+  
+4. Publish the release.
+
+  ```bash
+  cargo publish
+  ```
+  
+5. Push the tag.
+
+  ```bash
+  git push origin $tag
+  ```
+
+## Crate prometheus-static-metric
+
+1. Create pull request with bumped `version` in `static-metric/Cargo.toml` and updated `static-metric/CHANGELOG.md`.
+
+2. Once merged clean your local environment.
+
+  ```bash
+  cd static-metric
+  cargo clean
+  git clean -fd
+  ```
+  
+3. Tag the release.
+
+  ```bash
+  tag="$(sed -En 's/^name = \"(.*)\"$/\1/p' Cargo.toml | head -n 1)-v$(sed -En 's/^version = \"(.*)\"$/\1/p' Cargo.toml)"
+  git tag -s "${tag}" -m "${tag}"
+  ```
+  
+4. Publish the release.
+
+  ```bash
+  cargo publish
+  ```
+  
+5. Push the tag.
+
+  ```bash
+  git push origin $tag
+  ```
+