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feat: build go with -ldflags="-s -w"

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sudo pacman -Syu 2023-05-18 23:44:36 +07:00
parent 4c6a8436bb
commit b55d99d80a
2 changed files with 31 additions and 7 deletions
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26
docs/2022-06-08-dockerfile-go.html
View File

@ -68,7 +68,7 @@
<span class="pl-k">COPY</span> vendor .
<span class="pl-k">COPY</span> . .
<span class="pl-k">RUN</span> CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath .
<span class="pl-k">RUN</span> CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath -ldflags=<span class="pl-s">"-s -w"</span> .
<span class="pl-k">FROM</span> gcr.io/distroless/base-debian11
@ -136,7 +136,7 @@
don't want each time I build Dockerfile, I need to redownload Go modules.
</p>
<div class="highlight highlight-source-dockerfile">
<pre><span class="pl-k">RUN</span> CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath .</pre>
<pre><span class="pl-k">RUN</span> CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath -ldflags=<span class="pl-s">"-s -w"</span> .</pre>
</div>
<p>This is where I build Go program.</p>
<p>
@ -152,8 +152,9 @@
>. TLDR's newer computers are already x86-64-v3.
</p>
<p>
<code>-tags timetzdata</code> to embed timezone database incase base image
does not have. <code>-trimpath</code> to support reproduce build.
<code>-tags timetzdata</code> to embed timezone database in case base
image does not have. <code>-trimpath</code> to support reproduce build.
<code>-ldflags="-s -w"</code> to strip debugging information.
</p>
<div class="highlight highlight-source-dockerfile">
<pre><span class="pl-k">FROM</span> gcr.io/distroless/base-debian11
@ -163,6 +164,23 @@
<span class="pl-k">ENTRYPOINT</span> [<span class="pl-s">"/app"</span>]</pre>
</div>
<p>Finally, I copy <code>app</code> to Distroless base image.</p>
<p>Thanks</p>
<ul>
<li>
<a
href="https://boyter.org/posts/how-to-start-go-project-2023/"
rel="nofollow"
>How to start a Go project in 2023</a
>
</li>
<li>
<a
href="https://words.filippo.io/shrink-your-go-binaries-with-this-one-weird-trick/"
rel="nofollow"
>Shrink your Go binaries with this one weird trick</a
>
</li>
</ul>
<div>
Feel free to ask me via

12
posts/2022-06-08-dockerfile-go.md
View File

@ -18,7 +18,7 @@ COPY go.sum .
COPY vendor .
COPY . .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath -ldflags="-s -w" .
FROM gcr.io/distroless/base-debian11
@ -69,7 +69,7 @@ First is `go.mod` and `go.sum` because it defines Go modules.
The second is `vendor`, this is optional but I use it because I don't want each time I build Dockerfile, I need to redownload Go modules.
```Dockerfile
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GOAMD64=v3 go build -o ./app -tags timetzdata -trimpath -ldflags="-s -w" .
```
This is where I build Go program.
@ -79,8 +79,9 @@ This is where I build Go program.
`GOAMD64=v3` is new since [Go 1.18](https://go.dev/doc/go1.18#amd64),
I use v3 because I read about AMD64 version in [Arch Linux rfcs](https://gitlab.archlinux.org/archlinux/rfcs/-/blob/master/rfcs/0002-march.rst). TLDR's newer computers are already x86-64-v3.
`-tags timetzdata` to embed timezone database incase base image does not have.
`-tags timetzdata` to embed timezone database in case base image does not have.
`-trimpath` to support reproduce build.
`-ldflags="-s -w"` to strip debugging information.
```Dockerfile
FROM gcr.io/distroless/base-debian11
@ -91,3 +92,8 @@ ENTRYPOINT ["/app"]
```
Finally, I copy `app` to Distroless base image.
Thanks
- [How to start a Go project in 2023](https://boyter.org/posts/how-to-start-go-project-2023/)
- [Shrink your Go binaries with this one weird trick](https://words.filippo.io/shrink-your-go-binaries-with-this-one-weird-trick/)