Use multi-stage builds and remove apt and pip caches

Changelog for 0.3.2:

• PR #62 feat: user multi-stage builds and remove apt and pip caches by @LucasRoesler

Commits
79b444b feat: user multi-stage builds and remove apt and pip caches by @LucasRoesler
d3cd007 Upgrade to of-watchdog 0.9.8 for the readiness endpoint by @alexellis

Changes: 0.3.1...0.3.2

Generated by Derek

Use Dockerfile's own chown instruction to speed up builds

Changelog for 0.3.1:

• PR #58 feat: use chown during copy to reduce image size and build time by @LucasRoesler

Commits
56b349d feat: use chown during copy to reduce image size and build time by @LucasRoesler

Changes: 0.3.0...0.3.1

Generated by Derek

Migrating to multi-arch only templates

Changelog for 0.3.0:

• PR #61 Remove armhf templates and move to multi-arch / buildx by @alexellis

Commits
bf64898 Remove armhf templates and move to multi-arch / buildx by @alexellis

Changes: 0.2.0...0.3.0

Generated by Derek

Prior to removal of -armhf templates, and moving to multi-arch patterns

Changelog for 0.2.0:

• PR #56 Update of-watchdog to 0.9.6 by @welteki
• PR #54 Make TEST_ENABLED conditional syntax POSIX friendly by @rgschmitz1
• PR #46 fix: tox config file as in sub directory correcting WORKDIR by @saikiran2603
• PR #42 Use tox to test the python3-flask template by @LucasRoesler
• PR #40 Update README example for accessing headers by @mehyedes
• PR #39 Enable binary responses in the http-templates by @alexellis
• PR #38 Fix for exception thrown when RAW_BODY is undefined by @dsbibby
• PR #34 Clarify use and purpose of templates in this repo by @alexellis
• PR #33 Remove gevent and use waitress in all templates by @LucasRoesler
• PR #31 Update the readme to include the debian templates by @Jeff-Lowrey
• PR #30 Create debian templates for the python 3 flask templates. by @alexellis
• PR #27 Set default value for HOSTNAME for python3-http templates by @mehyedes
• PR #22 Update arm templates to use multi-arch watchdog by @burtonr
• PR #16 Update the handler to match style of golang-http-template by @kturcios
• PR #14 Increase of-watchdog version to 0.4.6 by @omerzamir
• PR #13 Bump of-watchdog version to 0.4.2 by @rdimitrov
• PR #10 Added new method to index.py to fix an issue with chunked encoding an… by @ssullivan
• PR #11 Bump of-watchdog version to 0.4.1 by @rdimitrov

Commits
e4f4f42 Update examples in README and put http template first by @alexellis
9223d15 Update of-watchdog to 0.9.6 by @welteki
f93d2eb use of watchdog 0.9.3 to suppress custom health check logs by @nitishkumar71
152f0bc fix: make TEST_ENABLED conditional posix friendly by @rgschmitz1
12db680 fix: tox config file as in sub directory correcting WORKDIR by @saikiran2603
cdb82b4 Document how to control the testing by @LucasRoesler
91271bc Use a separate varaible for controlling tests by @LucasRoesler
19512d2 Add build arg to control the test command by @LucasRoesler
5a54c92 Make sample test a noop by @LucasRoesler
fef5672 Use tox to test the python3-flask template by @LucasRoesler
b7057b6 Fix typos by @alexellis
d4f9645 Update README example for accessing headers by @mehyedes
9fb5527 Enable binary responses in the http-templates by @alexellis
0ca73dc Fix for exception thrown when RAW_BODY is undefined by @dsbibby
7f9288a Add required .github files by @alexellis
90bcd72 Fix typo in README by @alexellis
8d0f44f Update debian template watchdog by @alexellis
7411356 Clarify use and purpose of templates in this repo by @alexellis
e815593 Remove gevent and use waitress in all templates by @LucasRoesler
cb68fbf Update the readme to include the debian templates by Jeff Lowrey
4b6a15d Create debian templates for the python 3 flask templates. by Jeff Lowrey
e2e2e9e Set default value for hostname by @mehyedes
f805dad Update watchdog to 0.7.2 by @alexellis
7e93737 Update arm templates to use multi-arch watchdog by @burtonr
ccf3ba6 Non-root users for all templates by @burtonr
f016955 Switch to multi-arch image to pull images by @alexellis
77ee581 Remove TODO by @alexellis
79e29c4 Update README by @kturcios
3b8e568 Sync python versions for http templates and add headers by @kturcios
461c2be Update the handler to match style of golang-http-template by @kturcios

Changes: 0.1.0...0.2.0

Generated by Derek

Initial release

Bump watchdog to 0.4.0

Signed-off-by: Martin Dekov (VMware) <mdekov@vmware.com>