take brackets into account for variable expansion

[MiguelMoll]

No description provided.

[MiguelMoll]

interpolation in docker-compose command sequence

[codecov]

Codecov Report

Merging #2230 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #2230      +/-   ##
==========================================
- Coverage   30.98%   30.98%   -0.01%     
==========================================
  Files         144      144              
  Lines       14570    14570              
==========================================
- Hits         4515     4514       -1     
- Misses       9579     9580       +1     
  Partials      476      476

Impacted Files	Coverage Δ
manifest/interpolate.go	100% <100%> (ø)	⬆️
api/models/agent.go	97.69% <0%> (-0.77%)	⬇️

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