Add publish github action (#59)

* Add publish action

* Use package:vx.y.z instead of package@x.y.z

* Update README

* Fix github ref checks

Author: ali-behjati

.github/workflows/publish.yml

@@ -0,0 +1,64 @@
+name: Publish Pyth SDK to crates.io
+
+on:
+  release:
+    types:
+      - created
+jobs:
+  publish-pyth-sdk:
+    name: Publish Pyth SDK
+    if: ${{ startsWith(github.ref, "refs/tags/pyth-sdk:v") }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - run: cargo publish --token ${CARGO_REGISTRY_TOKEN}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        working-directory: "pyth-sdk"
+  publish-pyth-sdk-solana:
+    name: Publish Pyth SDK Solana
+    if: ${{ startsWith(github.ref, "refs/tags/pyth-sdk-solana:v") }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - run: cargo publish --token ${CARGO_REGISTRY_TOKEN}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        working-directory: "pyth-sdk-solana"
+  publish-pyth-sdk-terra:
+    name: Publish Pyth SDK CW
+    if: ${{ startsWith(github.ref, "refs/tags/pyth-sdk-cw:v") }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - run: cargo publish --token ${CARGO_REGISTRY_TOKEN}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        working-directory: "pyth-sdk-cw"

README.md

@@ -40,8 +40,8 @@ To release a new version of any of these crates, perform the following steps wit
 1. Increment the version number in `Cargo.toml`.
    You may use a version number with a `-beta.x` suffix such as `0.0.1-beta.0` to create opt-in test versions.
 2. Merge your change into `main` on github.
-3. Create and publish a new github release.
-   We currently don't have a Github Action to automatically push releases to [crates.io](https://crates.io), but should set one up.
+3. Create and publish a new github release with the structure of `package:vx.y.z` such as `pyth-sdk-solana:v1.3.2`. It will trigger a github action
+   and publishes the released package in [crates.io](https://crates.io)
 
 ### pre-commit hooks
 pre-commit is a tool that checks and fixes simple issues (formatting, ...) before each commit. You can install it by following [their website](https://pre-commit.com/). In order to enable checks for this repo run `pre-commit install` from command-line in the root of this repo.