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feat: bump go 1.19 Dockerfile

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sudo pacman -Syu 2022-10-09 17:45:31 +07:00
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docs/2022-06-08-dockerfile-go.html
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@ -1,7 +1,7 @@
<!doctype html><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link rel=preconnect href=https://fonts.googleapis.com><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link href="https://fonts.googleapis.com/css2?family=Recursive:wght,CASL,MONO@300..800,0..1,0..1&display=swap" rel=stylesheet><link href=https://haunt98.github.io/iosevka_webfont/iosevka-term-ss08/iosevka-term-ss08.css rel=stylesheet><link rel=stylesheet href=styles.css><a href=index>Index</a><h1>Dockerfile for Go</h1><p>Each time I start a new Go project, I repeat many steps.<br>Like set up <code>.gitignore</code>, CI configs, Dockerfile, ...<p>So I decide to have a baseline Dockerfile like this:<pre><code class=language-Dockerfile>FROM golang:1.18-bullseye as builder
<!doctype html><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><link rel=preconnect href=https://fonts.googleapis.com><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link href="https://fonts.googleapis.com/css2?family=Recursive:wght,CASL,MONO@300..800,0..1,0..1&display=swap" rel=stylesheet><link href=https://haunt98.github.io/iosevka_webfont/iosevka-term-ss08/iosevka-term-ss08.css rel=stylesheet><link rel=stylesheet href=styles.css><a href=index>Index</a><h1>Dockerfile for Go</h1><p>Each time I start a new Go project, I repeat many steps.<br>Like set up <code>.gitignore</code>, CI configs, Dockerfile, ...<p>So I decide to have a baseline Dockerfile like this:<pre><code class=language-Dockerfile>FROM golang:1.19-bullseye as builder
RUN go install golang.org/dl/go1.18@latest \
&amp;&amp; go1.18 download
RUN go install golang.org/dl/go1.19@latest \
&amp;&amp; go1.19 download
WORKDIR /build
@ -17,9 +17,9 @@ FROM gcr.io/distroless/base-debian11
COPY --from=builder /build/app /app
ENTRYPOINT [&quot;/app&quot;]
</code></pre><p>I use <a href=https://docs.docker.com/develop/develop-images/multistage-build/>multi-stage build</a> to keep my image size small.<br>First stage is <a href=https://hub.docker.com/_/golang>Go official image</a>,<br>second stage is <a href=https://github.com/GoogleContainerTools/distroless>Distroless</a>.<p>Before Distroless, I use <a href=https://hub.docker.com/_/alpine>Alpine official image</a>,<br>There is a whole discussion on the Internet to choose which is the best base image for Go.<br>After reading some blogs, I discover Distroless as a small and secure base image.<br>So I stick with it for a while.<p>Also, remember to match Distroless Debian version with Go official image Debian version.<pre><code class=language-Dockerfile>FROM golang:1.18-bullseye as builder
</code></pre><p>This is Go image I use as a build stage.<br>This can be official Go image or custom image is required in some companies.<pre><code class=language-Dockerfile>RUN go install golang.org/dl/go1.18@latest \
&amp;&amp; go1.18 download
</code></pre><p>I use <a href=https://docs.docker.com/develop/develop-images/multistage-build/>multi-stage build</a> to keep my image size small.<br>First stage is <a href=https://hub.docker.com/_/golang>Go official image</a>,<br>second stage is <a href=https://github.com/GoogleContainerTools/distroless>Distroless</a>.<p>Before Distroless, I use <a href=https://hub.docker.com/_/alpine>Alpine official image</a>,<br>There is a whole discussion on the Internet to choose which is the best base image for Go.<br>After reading some blogs, I discover Distroless as a small and secure base image.<br>So I stick with it for a while.<p>Also, remember to match Distroless Debian version with Go official image Debian version.<pre><code class=language-Dockerfile>FROM golang:1.19-bullseye as builder
</code></pre><p>This is Go image I use as a build stage.<br>This can be official Go image or custom image is required in some companies.<pre><code class=language-Dockerfile>RUN go install golang.org/dl/go1.19@latest \
&amp;&amp; go1.19 download
</code></pre><p>This is optional.<br>In my case, my company is slow to update Go image so I use this trick to install latest Go version.<pre><code class=language-Dockerfile>WORKDIR /build
COPY go.mod .

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posts/2022-06-08-dockerfile-go.md
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@ -6,10 +6,10 @@ Like set up `.gitignore`, CI configs, Dockerfile, ...
So I decide to have a baseline Dockerfile like this:
```Dockerfile
FROM golang:1.18-bullseye as builder
FROM golang:1.19-bullseye as builder
RUN go install golang.org/dl/go1.18@latest \
&& go1.18 download
RUN go install golang.org/dl/go1.19@latest \
&& go1.19 download
WORKDIR /build
@ -39,15 +39,15 @@ So I stick with it for a while.
Also, remember to match Distroless Debian version with Go official image Debian version.
```Dockerfile
FROM golang:1.18-bullseye as builder
FROM golang:1.19-bullseye as builder
```
This is Go image I use as a build stage.
This can be official Go image or custom image is required in some companies.
```Dockerfile
RUN go install golang.org/dl/go1.18@latest \
&& go1.18 download
RUN go install golang.org/dl/go1.19@latest \
&& go1.19 download
```
This is optional.