build core, basic and go variants and add template

go/Containerfile

@@ -0,0 +1,17 @@
+FROM code-basic
+USER root
+ENV HOME=/root
+
+# Install alpine packages
+RUN apk add --no-cache go go-doc
+
+# Install go packages
+ENV GOPATH=/usr/local/lib/go PATH=/usr/local/lib/go/bin:$PATH
+RUN go install golang.org/x/tools/gopls@latest && rm -rf $(go env GOCACHE)
+
+# Add neovim config
+COPY nvim /etc/xdg/nvim
+
+# Configure environment
+USER 1000:1000
+ENV HOME=/tmp

go/nvim/init/go.lua

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+require('lspconfig').gopls.setup {}

go/nvim/luasnippets/go.lua

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+return {
+  parse(
+    { trig = 'func', name = 'Function' },
+    'func ${1:name}($2) $3{\n\t$4\n}'
+  ),
+  parse(
+    { trig = 'err', name = 'Handle error' },
+    'if ${2:err} != nil { return ${1}${2} }'
+  ),
+}

go/podman.args

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+--env
+GOPATH=/work/{NAME}/.go
+--env
+GOCACHE=/work/{NAME}/.go/cache