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Merge pull request #26 from sapcc/dockerfile
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| # renovate: datasource=docker depName=alpine versioning=docker | ||
| ARG ALPINE_VERSION=3.16 | ||
| # renovate: datasource=docker depName=golang versioning=docker | ||
| ARG GOLANG_VERSION=1.17.10-alpine |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| // Copyright 2022 SAP SE | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package dockerfile | ||
|
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||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
|
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| _ "embed" | ||
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| "github.com/sapcc/go-makefile-maker/internal/core" | ||
| "github.com/sapcc/go-makefile-maker/internal/util" | ||
| ) | ||
|
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| func mustI(_ int, err error) { | ||
| util.Must(err) | ||
| } | ||
|
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| //go:embed Dockerfile.template | ||
| var template []byte | ||
|
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| func RenderConfig(cfg core.Configuration) error { | ||
| var goBuildflags, packages, user, entrypoint string | ||
|
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| if cfg.Vendoring.Enabled { | ||
| goBuildflags = ` GO_BUILDFLAGS='-mod vendor'` | ||
| } | ||
|
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| for _, v := range append([]string{"ca-certificates"}, cfg.Dockerfile.ExtraPackages...) { | ||
| packages += fmt.Sprintf(" %s", v) | ||
| } | ||
|
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| if cfg.Dockerfile.User != "" { | ||
| user = cfg.Dockerfile.User | ||
| } else { | ||
| user = "nobody" | ||
| } | ||
|
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| if len(cfg.Dockerfile.Entrypoint) > 0 { | ||
| entrypoint = strconv.Quote(strings.Join(cfg.Dockerfile.Entrypoint, `", "`)) | ||
| } else { | ||
| entrypoint = fmt.Sprintf(`"/usr/bin/%s"`, cfg.Binaries[0].Name) | ||
| } | ||
|
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| dockerfile := fmt.Sprintf( | ||
| `%[1]s | ||
| FROM golang:${GOLANG_VERSION}${ALPINE_VERSION} as builder | ||
| RUN apk add --no-cache gcc git make musl-dev | ||
| COPY . /src | ||
| RUN make -C /src install PREFIX=/pkg%[2]s | ||
| ################################################################################ | ||
| FROM alpine:${ALPINE_VERSION} | ||
| RUN apk add --no-cache%[4]s | ||
| COPY --from=builder /pkg/ /usr/ | ||
| LABEL source_repository="%[3]s" \ | ||
| org.opencontainers.image.url="%[3]s" \ | ||
| org.opencontainers.image.revision=unknown | ||
| USER %[5]s:%[5]s | ||
| WORKDIR /var/empty | ||
| ENTRYPOINT [ %[6]s ] | ||
| `, template, goBuildflags, cfg.Metadata.URL, packages, user, entrypoint) | ||
|
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| f, err := os.Create("Dockerfile") | ||
| util.Must(err) | ||
|
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| mustI(f.WriteString(dockerfile)) | ||
| util.Must(f.Close()) | ||
|
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| f, err = os.Create(".dockerignore") | ||
| util.Must(err) | ||
|
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| mustI(f.WriteString( | ||
| `.dockerignore | ||
| # TODO: uncomment when applications no longer use git to get version information | ||
| #.git/ | ||
| .github/ | ||
| .gitignore | ||
| .goreleaser.yml | ||
| /*.env* | ||
| .golangci.yaml | ||
| build/ | ||
| CONTRIBUTING.md | ||
| Dockerfile | ||
| docs/ | ||
| LICENSE* | ||
| Makefile.maker.yaml | ||
| README.md | ||
| report.html | ||
| shell.nix | ||
| /testing/ | ||
| `)) | ||
| mustI(f.WriteString(strings.Join(cfg.Dockerfile.ExtraIgnores, "\n") + "\n")) | ||
| return f.Close() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| // Copyright 2022 SAP SE | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| package util | ||
|
|
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| import ( | ||
| "fmt" | ||
| "os" | ||
| ) | ||
|
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| func Must(err error) { | ||
| if err != nil { | ||
| fmt.Fprintln(os.Stderr, "FATAL:", err.Error()) | ||
| if os.IsNotExist(err) { | ||
| fmt.Fprintln(os.Stderr, "HINT: Did you run this in the root directory of a suitable Git repository?") | ||
| } | ||
| os.Exit(1) | ||
| } | ||
| } |
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