Adds some examples to build golang projects (#3)

I added some examples to

- use the CI to build golang projects
- build and publish a 'latest' tagged docker container to DockerHub
- build and publish a version tagged docker container from a version tag to DockerHub

Co-authored-by: JohnWalkerx <johnwalkerx@mailbox.org>
Reviewed-on: https://codeberg.org/Codeberg-CI/examples/pulls/3
Co-authored-by: JohnWalkerx <johnwalkerx@noreply.codeberg.org>
Co-committed-by: JohnWalkerx <johnwalkerx@noreply.codeberg.org>

README.md

@@ -8,6 +8,8 @@ Pull requests are accepted/welcome.
 | Link | Language | Build System | Comments |
 | :--  | :--      | :--          | :--      |
 | [C/make.yml](C/make.yml) | C | Make | Simple ci for building a Make based C project |
+| [golang/build.yml](golang/build.yml) | golang | golang | Simple ci for building and test a Go project |
+| [golang/build-docker.yml](golang/build-docker.yml) | golang | golang / kaniko | CI to build golang project and build various docker container and publish them on DockerHub |
 
 # More:
 https://codeberg.org/explore/repos?q=woodpecker-ci&topic=1

golang/Dockerfile

@@ -0,0 +1,17 @@
+# Replace 'APPLICATIONNAME' with the name of your golang project
+
+FROM golang:1.17 AS certs
+
+FROM scratch
+
+# copy certs from golang:1.17 image
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+
+# Copy prebuild Go binary into container
+COPY ./APPLICATIONNAME /APPLICATIONNAME
+
+# Uncomment and ajust if golang application exposes an port
+#EXPOSE 3000
+
+# Run application
+CMD ["/APPLICATIONNAME"]

golang/build-docker.yml

@@ -0,0 +1,64 @@
+pipeline:
+  # Builds your Go application
+  build:
+    # Set your preferred Go version: 
+    image: golang:1.17
+    environment:
+      # Needed if you want to cross-compile and package the binary in a container.
+      - CGO_ENABLED=0
+      # Select your target OS:
+      - GOOS=linux
+      # Select your target architecture:
+      - GOARCH=amd64
+    commands:
+      - go get
+      - go build
+
+  # Runs a dryrun to build the docker container
+  dryrun-docker:
+    image: plugins/kaniko
+    settings:
+      repo: DOCKERUSERNAME/DOCKERHUBREPO
+      tags: test
+      dockerfile: Dockerfile
+      # Just builds the container without a push to DockerHub.
+      no_push: true
+    when:
+      event: pull_request
+
+  # Builds and publish a docker container to DockerHub from the main-branch
+  publish-docker-latest:
+    image: plugins/kaniko
+    settings:
+      repo: DOCKERUSERNAME/DOCKERHUBREPO
+      tags: latest
+      dockerfile: Dockerfile
+      username:
+        # Secret 'docker_username' needs to be set in the CI settings
+        from_secret: docker_username
+      password:
+        # Secret 'docker_password' needs to be set in the CI settings
+        from_secret: docker_password
+    when:
+      # Push new version of tag latest if new push on main-branch
+      event: push
+      branch: main
+
+  # Builds and publishes a docker container of a tag
+  publish-docker-tag:
+    image: plugins/kaniko
+    settings:
+      repo: DOCKERUSERNAME/DOCKERHUBREPO
+      # Uses the tag from git for the container tag
+      tags: ${CI_COMMIT_TAG}
+      dockerfile: Dockerfile
+      username:
+        # Secret 'docker_username' needs to be set in the CI settings
+        from_secret: docker_username
+      password:
+        # Secret 'docker_password' needs to be set in the CI settings
+        from_secret: docker_password
+    when:
+      # Push new version when version tag is created
+      event: tag
+      tag: v*

golang/build.yml

@@ -0,0 +1,8 @@
+pipeline:
+  build:
+    image: golang:1.17
+    commands:
+      - go get
+      - go build
+      # Optional: Run go tests
+      - go test